List of That Time I Got Reincarnated as a Slime episodes

That Time I Got Reincarnated as a Slime is an anime television series based on the light novel series of the same title written by Fuse and illustrated by Mitz Vah. The series follows a man who dies and is reincarnated in another world as a slime named Rimuru. The anime is produced by Eight Bit and directed by Yasuhito Kikuchi, with Atsushi Nakayama as assistant director, Kazuyuki Fudeyasu handling series composition, Ryouma Ebata designing the characters, and Takahiro Kishida providing monster designs. Elements Garden is composing the series' music. The 24-episode series aired from October 2, 2018, to March 19, 2019, on Tokyo MX and other networks. The anime series is simulcast by Crunchyroll, with Funimation streaming an English dub as it airs. An original animation DVD (OAD) was originally scheduled to be released on March 29, 2019, bundled with the 11th manga volume, but it was delayed to December 4, 2019, bundled with the 13th manga volume. A second original animation DVD released on July 9, 2019, bundled with the 12th manga volume. Three more original animation DVDs have been announced, with the third OAD being released on March 27, 2020, bundled with the 14th manga volume. The fourth OAD was bundled with the 15th manga volume, which released on July 9, 2020. The fifth OADs was bundled with 16th manga volume, which released on November 11, 2020.

A second season was announced to be a split-cour anime, and the first half was scheduled to premiere in October 2020, but has been delayed to January 2021 due to COVID-19. The second half was also delayed from April to July 2021. The first half aired from January 12 to March 30, 2021, and the second half aired from July 6 to September 21, 2021. Eight Bit returned to animate the series, with the staff and cast members reprising their roles.

A spin-off anime series based on the Slime Diaries: That Time I Got Reincarnated as a Slime manga was scheduled to premiere in January 2021 but was delayed to April 2021 due to COVID-19. The series aired from April 6 to June 22, 2021. Eight Bit also animated the series, with Yuji Ikuhara directing the series, Kotatsumikan writing the scripts, Risa Takai and Atsushi Irie as character designers, and R.O.N composing the music.

A three-episode original net animation (ONA) series, titled Visions of Coleus, was announced on February 19, 2023, and premiered on November 1, 2023. The staff from the second season reprised their roles along with Toshizo Nemoto handling series composition. The opening theme song, "Hikaru Hanatsu", is performed by Takuma Terashima, while the ending theme song is performed by Miho Okasaki.

A third season was announced in November 2022 and premiered on April 5, 2024, on the Friday Anime Night programming block on Nippon TV and its affiliates, as well as BS11. The staff from the second season and the Visions of Coleus ONA series are returning to reprise their roles.

Series overview

Season	Episodes		Originally aired
			First aired	Last aired
1	24		October 2, 2018 (2018-10-02)	March 19, 2019 (2019-03-19)
2	24	12	January 12, 2021 (2021-01-12)	March 30, 2021 (2021-03-30)
		12	July 6, 2021 (2021-07-06)	September 21, 2021 (2021-09-21)
3	TBA		April 5, 2024 (2024-04-05)	TBA

Episodes

Season 1 (2018–19)

Main article: That Time I Got Reincarnated as a Slime season 1

No. overall	No. in season	Title	Directed by	Storyboarded by	Chief animation directed by	Original air date
1	1	"The Storm Dragon, Veldora" Transliteration: "Boufuu Ryuu Verudora" (Japanese: 暴風ぼうふう竜りゅうヴェルドラ)	Atsushi Nakayama	Yasuhito Kikuchi	Ryōma Ebata	October 2, 2018 (2018-10-02)
2	2	"Meeting the Goblins" Transliteration: "Goburin-tachi to no Deai" (Japanese: ゴブリンたちとの出会であい)	Shintaro Inokawa	Masashi Kojima	Ryōma Ebata	October 9, 2018 (2018-10-09)
3	3	"Battle at the Goblin Village" Transliteration: "Goburin Mura de no Tatakai" (Japanese: ゴブリン村むらでの戦たたかい)	Shin Tosaka	Takaomi Kanasaki	Junichi Takaoka	October 16, 2018 (2018-10-16)
4	4	"In the Kingdom of the Dwarves" Transliteration: "Dowāfu no Ōkoku Nite" (Japanese: ドワーフの王国おうこくにて)	Tokugane Tanizawa	Taizo Yoshida	Kenichirō Katsura	October 23, 2018 (2018-10-23)
5	5	"Hero King, Gazel Dwargo" Transliteration: "Eiyū-ō Gazeru・Dowarugo" (Japanese: 英雄えいゆう王おうガゼル・ドワルゴ)	Yoshihiro Mori	Junichi Takaoka	Junichi Takaoka	October 30, 2018 (2018-10-30)
6	6	"Shizu" (Japanese: シズ)	Yasuhiro Ito	Masashi Kojima	Kenichirō Katsura	November 6, 2018 (2018-11-06)
7	7	"Conqueror of Flames" Transliteration: "Bakuen no Shihai-sha" (Japanese: 爆ばく炎えんの支配しはい者しゃ)	Atsushi Nakayama	Masashi Kojima	Kenichirō Katsura	November 13, 2018 (2018-11-13)
8	8	"Inherited Will" Transliteration: "Uketsugareru Omoi" (Japanese: 受うけ継つがれる想おもい)	Takumi Dōyama	Katsumi Terahigashi	Takashi Mamezuka	November 20, 2018 (2018-11-20)
9	9	"Attack of the Ogres" Transliteration: "Dai Kizoku no Shūgeki" (Japanese: 大だい鬼おに族ぞくの襲撃しゅうげき)	Shin Tosaka	Katsumi Terahigashi	Junichi Takaoka	November 27, 2018 (2018-11-27)
10	10	"The Orc Lord" Transliteration: "Ōku Rōdo" (Japanese: オークロード)	Tokugane Tanizawa	Hidetoshi Namura	Kenichirō Katsura	December 4, 2018 (2018-12-04)
11	11	"Gabiru Is Here!" Transliteration: "Gabiru Sanjō!" (Japanese: ガビル参上さんじょう！)	Yoshifumi Sasahara	Taizo Yoshida	Takashi Mamezuka	December 11, 2018 (2018-12-11)
12	12	"The Gears Spin Out of Control" Transliteration: "Kuruiyuku Haguruma" (Japanese: 狂くるいゆく歯車はぐるま)	Yoshihiro Mori	Munenori Nawa	Takashi Mamezuka & Kenichirō Katsura	December 18, 2018 (2018-12-18)
13	13	"The Great Clash" Transliteration: "Dai Gekitotsu" (Japanese: 大だい激突げきとつ)	Atsushi Nakayama	Shinji Itadaki	Kenichirō Katsura	December 25, 2018 (2018-12-25)
14	14	"The One Who Devours All" Transliteration: "Subete o Kurau Mono" (Japanese: 全すべてを喰くらう者もの)	Yasuhiro Ito	Masashi Kojima	Takashi Mamezuka	January 8, 2019 (2019-01-08)
15	15	"The Jura Forest Alliance" Transliteration: "Jura no Mori Dai Dōmei" (Japanese: ジュラの森もり大だい同盟どうめい)	Akira Yamada	Katsumi Terahigashi	Junichi Takaoka	January 15, 2019 (2019-01-15)
16	16	"Demon Lord Milim Attacks" Transliteration: "Maō Mirimu Raishū" (Japanese: 魔王まおうミリム来襲らいしゅう)	Munenori Nawa	Yasuhito Kikuchi & Masashi Kojima	Kenichirō Katsura	January 22, 2019 (2019-01-22)
17	17	"The Gathering" Transliteration: "Tsudōsha-tachi" (Japanese: 集つどう者もの達たち)	Shin Tosaka	Masashi Kojima	Junichi Takaoka	January 29, 2019 (2019-01-29)
18	18	"Evil Creeps Closer" Transliteration: "Shinobiyoru Akui" (Japanese: 忍しのび寄よる悪意あくい)	Yoshihiro Mori	Masashi Kojima & Yasuhito Kikuchi	Kenichirō Katsura	February 5, 2019 (2019-02-05)
19	19	"Charybdis" Transliteration: "Karyubudisu" (Japanese: 暴風ぼうふう大だい妖渦（カリュブディス）)	Atsushi Nakayama	Yasuhito Kikuchi & Risako Yoshida	Takashi Mamezuka	February 12, 2019 (2019-02-12)
20	20	"Yuuki Kagurazaka" (Japanese: ユウキ・カグラザカ)	Tokugane Tanizawa	Masashi Kojima	Junichi Takaoka	February 19, 2019 (2019-02-19)
21	21	"Shizu-san's Students" Transliteration: "Shizu-san no Oshiego-tachi" (Japanese: シズさんの教おしえ子ご達たち)	Ōri Yasukawa	Katsumi Terahigashi	Takashi Mamezuka	February 26, 2019 (2019-02-26)
22	22	"Conquering the Labyrinth" Transliteration: "Meikyū kōryaku" (Japanese: 迷宮めいきゅう攻略こうりゃく)	Shige Fukase	Shinji Itadaki	Hideki Sakai	March 5, 2019 (2019-03-05)
23	23	"Saved Souls" Transliteration: "Sukuwareru tamashii" (Japanese: 救すくわれる魂たましい)	Shin Tosaka	Masashi Kojima	Junichi Takaoka	March 12, 2019 (2019-03-12)
24	24	"Black and a Mask" Transliteration: "Gaiden: Kuro to Kamen" (Japanese: 外伝がいでん：黒くろと仮面かめん)	Munenori Nawa	Shinji Itadaki	Ryōma Ebata	March 19, 2019 (2019-03-19)

Season 2 (2021)

Main article: That Time I Got Reincarnated as a Slime season 2

No. overall	No. in season	Title	Directed by	Storyboarded by	Chief animation directed by	Original air date
Part 1
25	1	"Rimuru's Busy Life" Transliteration: "Rimuru no Isogashii Hibi" (Japanese: リムルの忙いそがしい日々ひび)	Munenori Nawa	Atsushi Nakayama & Ryōma Ebata	Tomoko Ito	January 12, 2021 (2021-01-12)
26	2	"Trade with the Animal Kingdom" Transliteration: "Jū Ōkoku to no Kōeki" (Japanese: 獣しし王国おうこくとの交易こうえき)	Daisuke Eguchi	Taizo Yoshida	Keiya Nakano	January 19, 2021 (2021-01-19)
27	3	"Paradise, Once More" Transliteration: "Rakuen, Futatabi" (Japanese: 楽園らくえん、再ふたたび)	Shō Kitamura	Satoshi Shimizu	Hideki Sakai	January 26, 2021 (2021-01-26)
28	4	"The Scheming Kingdom of Falmuth" Transliteration: "Bōryaku no Farumusu Ōkoku" (Japanese: 謀略ぼうりゃくのファルムス王国おうこく)	Akira Katō	Masashi Kojima	Yūichi Tanaka	February 2, 2021 (2021-02-02)
29	5	"Prelude to the Disaster" Transliteration: "Saiyaku no Zensōkyoku" (Japanese: 厄やく災わざわいの前奏ぜんそう曲きょく)	Shunji Yoshida	Taizo Yoshida	Tomoko Ito	February 9, 2021 (2021-02-09)
30	6	"The Beauty Makes Her Move" Transliteration: "Ugokidasu Reijin" (Japanese: 動うごき出だす麗人れいじん)	Shunsuke Ishikawa	Satoshi Shimizu & Masashi Kojima	Keiya Nakano & Hideki Yamazaki	February 16, 2021 (2021-02-16)
31	7	"Despair" Transliteration: "Zetsubō" (Japanese: 絶望ぜつぼう)	Munenori Nawa, Daishi Katō & Takahiro Tanaka	Satoshi Shimizu	Yūichi Tanaka, Tomoko Ito & Keiya Nakano	February 23, 2021 (2021-02-23)
32	8	"Hope" Transliteration: "Kibō" (Japanese: 希望きぼう)	Kazuto Fujiwara	Shinji Itadaki	Yūichi Tanaka, Tomoko Ito & Hideki Sakai	March 2, 2021 (2021-03-02)
33	9	"Putting Everything on the Line" Transliteration: "Subete o Kakete" (Japanese: 全すべてを賭かけて)	Shigeru Fukase	Shinji Itadaki	Hideki Sakai	March 9, 2021 (2021-03-09)
34	10	"Megiddo" Transliteration: "Megido" (Japanese: 神かみ之の怒いか（メギド）)	Daisuke Eguchi	Satoshi Shimizu	Keiya Nakano & Hideki Sakai	March 16, 2021 (2021-03-16)
35	11	"Birth of a Demon Lord" Transliteration: "Maō Tanjō" (Japanese: 魔王まおう誕生たんじょう)	Shō Kitamura	Satoshi Shimizu	Yūichi Tanaka, Tomoko Ito & Hideki Sakai	March 23, 2021 (2021-03-23)
36	12	"The One Unleashed" Transliteration: "Tokihanatareshi Mono" (Japanese: 解とき放はなたれし者しゃ)	Shunsuke Ishikawa	Satoshi Shimizu	Hideki Sakai, Keiya Nakano, Yūichi Tanaka & Tomoko Ito	March 30, 2021 (2021-03-30)
Part 2
37	13	"The Visitors" Transliteration: "Otozureru Mono-tachi" (Japanese: 訪おとずれる者ものたち)	Atsushi Nakayama	Satoshi Shimizu	N/A	July 6, 2021 (2021-07-06)
38	14	"A Meeting of Humans and Monsters" Transliteration: "Jinma Kaidan" (Japanese: 人ひと魔ま会談かいだん)	Ken Sanuma	Shinji Itadaki	Tomoko Ito	July 13, 2021 (2021-07-13)
39	15	"Ramiris's Warning" Transliteration: "Ramirisu no Shirase" (Japanese: ラミリスの報しらせ)	Ryōsuke Azuma	Masashi Kojima	Hideki Sakai, Keiya Nakano & Tomoko Ito	July 20, 2021 (2021-07-20)
40	16	"The Congress Dances" Transliteration: "Kaigi wa Odoru" (Japanese: 会議かいぎは踊おどる)	Ryō Nakamura	Masashi Kojima	Keiya Nakano, Yūichi Tanaka, Hideki Yamazaki, Hideki Sakai & Masahiko Komino	July 27, 2021 (2021-07-27)
41	17	"The Eve of Battle" Transliteration: "Kaisen Zen'ya" (Japanese: 会戦かいせん前夜ぜんや)	Kazuto Fujiwara	Satoshi Shimizu	Keiya Nakano, Yūichi Tanaka, Hideki Yamazaki, Hideki Sakai & Masahiko Komino	August 3, 2021 (2021-08-03)
42	18	"The Demon Lords" Transliteration: "Maō-tachi" (Japanese: 魔王まおうたち)	Ken Sanuma	Satoshi Shimizu	Tomoko Ito	August 10, 2021 (2021-08-10)
43	19	"The Signal to Begin the Banquet" Transliteration: "Kaien no Aizu" (Japanese: 開宴かいえんの合図あいず)	Munenori Nawa	Taizo Yoshida	Keiya Nakano, Hideki Sakai, Yūichi Tanaka, Hideki Yamazaki & Masahiko Komino	August 17, 2021 (2021-08-17)
44	20	"On This Land Where It All Happened" Transliteration: "Innen no Chi de" (Japanese: 因縁いんねんの地ちで)	Shō Kitamura	Masashi Kojima	Keiya Nakano, Hideki Sakai, Yūichi Tanaka, Hideki Yamazaki & Masahiko Komino	August 24, 2021 (2021-08-24)
45	21	"Adalmann, the Index Finger" Transliteration: "Jishi no Adaruman" (Japanese: 示しめせ指ゆびのアダルマン)	Shigeru Fukase	Satoshi Shimizu	Hideki Sakai, Keiya Nakano, Hideki Yamazaki, Yūichi Tanaka, Masahiko Komino & Yasuhito Kikuchi	August 31, 2021 (2021-08-31)
46	22	"Demon Lords' Banquet: Walpurgis" Transliteration: "Maō-tachi no Utage ～Warupurugisu～" (Japanese: 魔王まおう達たちの宴うたげ 〜ワルプルギス〜)	Takahiro Enokida	Satoshi Shimizu	Tomoko Ito & Hideki Yamazaki	September 7, 2021 (2021-09-07)
47	23	"Returning from the Brink" Transliteration: "Kishikaisei" (Japanese: 起死回生きしかいせい)	Munenori Nawa	Satoshi Shimizu	Hideki Sakai, Tomoko Ito, Keiya Nakano, Hideki Yamazaki, Yūichi Tanaka, Yasuhito Kikuchi & Masahiko Komino	September 14, 2021 (2021-09-14)
48	24	"Octagram" Transliteration: "Okutaguramu" (Japanese: 八はち星ほし魔王まおう（オクタグラム）)	Daisuke Eguchi	Satoshi Shimizu	Hideki Sakai, Tomoko Ito, Hideki Yamazaki, Keiya Nakano, Yūichi Tanaka & Masahiko Komino	September 21, 2021 (2021-09-21)

Season 3 (2024)

Main article: That Time I Got Reincarnated as a Slime season 3

No. overall	No. in season	Title	Directed by	Written by	Storyboarded by	Original air date
49	1	"Demons and Strategies" Transliteration: "Akuma to Sakubō" (Japanese: 悪魔あくまと策謀さくぼう)	Satoshi Ōsedo	Toshizo Nemoto	Masashi Kojima	April 5, 2024 (2024-04-05)
50	2	"The Saint's Intentions" Transliteration: "Seijin no Omowaku" (Japanese: 聖人せいじんの思惑おもわく)	Chen Xiaocan	Toshizo Nemoto	Masashi Kojima	April 12, 2024 (2024-04-12)
51	3	"Peaceful Days" Transliteration: "Heiwana Hibi" (Japanese: 平和へいわな日々ひび)	Tomio Yamauchi	Toshizo Nemoto	Shinji Itadaki	April 19, 2024 (2024-04-19)
52	4	"Everyone Has a Part to Play" Transliteration: "Sorezore no Yakuwari" (Japanese: それぞれの役割やくわり)	Tomio Yamauchi	Shingo Irie	Taizo Yoshida	April 26, 2024 (2024-04-26)
53	5	"Meeting of Both Sides" Transliteration: "Ryōyoku Kaigi" (Japanese: 両翼りょうよく会議かいぎ)	Masaharu Tomoda	Okumura Junichirō	Masashi Kojima	May 3, 2024 (2024-05-03)
54	6	"Those Approaching" Transliteration: "Semari Kuru Mono-tachi" (Japanese: 迫せまり来くる者もの達たち)	Chen Xiaocan	Toshizo Nemoto	Shinji Itadaki	May 10, 2024 (2024-05-10)
55	7	"Saint and Demon Clash" Transliteration: "Seima Gekitotsu" (Japanese: 聖せい魔ま激突げきとつ)	Satoshi Ōsedo	Shingo Irie	Satoshi Ōsedo & Hideki Yamazaki	May 17, 2024 (2024-05-17)
56	8	"Misunderstanding" Transliteration: "Botan no Kake Chigai" (Japanese: ボタンのかけ違ちがい)	Yasushi Muroya	Okumura Junichirō	Satoshi Shimizu	May 24, 2024 (2024-05-24)
57	9	"The Scheming of the Seven Days" Transliteration: "Shichiyō Anyaku" (Japanese: 七曜しちよう暗躍あんやく)	Masahiko Suzuki	Tatsuto Higuchi	Ken Ōtsuka	May 31, 2024 (2024-05-31)
58	10	"God and Demon Lord" Transliteration: "Kami to Maō" (Japanese: 神かみと魔王まおう)	Daisuke Tsukushi	Toshizo Nemoto	Kenta Mimuro	June 7, 2024 (2024-06-07)
59	11	"Reconciliation and Agreement" Transliteration: "Wakai to Kyōtei" (Japanese: 和解わかいと協定きょうてい)	Naokatsu Tsuda & Neito Hirohara	Toshizo Nemoto	Masashi Kojima	June 14, 2024 (2024-06-14)
60	12	"Festival Preparations" Transliteration: "Kaisai Junbi" (Japanese: 開催かいさい準備じゅんび)	Takaaki Wada	Shingo Irie	Takaaki Wada	June 21, 2024 (2024-06-21)
61	13	"The Nations and Invitations" Transliteration: "Kakkoku to Shōtaijō" (Japanese: 各国かっこくと招待しょうたい状じょう)	Yasushi Muroya	Jun'ichirō Okumura	Yasushi Muroya	June 28, 2024 (2024-06-28)
62	14	"Labyrinth and Storm Dragon" Transliteration: "Meikyū to Bōfū Ryū" (Japanese: 迷宮めいきゅうと暴風ぼうふう竜りゅう)	Chen Xiaocan	Tatsuto Higuchi	Gō Kurosaki	July 5, 2024 (2024-07-05)
63	15	"Audience" Transliteration: "Ekkenshiki" (Japanese: 謁見えっけん式しき)	Satoshi Ōsedo	Toshizō Nemoto	Satoshi Shimizu	July 19, 2024 (2024-07-19)
64	16	"Benimaru's Ordeal" Transliteration: "Benimaru no Junan" (Japanese: ベニマルの受難じゅなん)	Daisuke Tsukushi	Shingo Irie	Daisuke Tsukushi	July 26, 2024 (2024-07-26)
65	17	"The Lightspeed Hero" Transliteration: "Senkō no Yūsha" (Japanese: 閃光せんこうの勇者ゆうしゃ)	Hitomi Ezoe	Tatsuto Higuchi	Futoshi Higashide	August 2, 2024 (2024-08-02)
66	18	"A Throng of Visitors" Transliteration: "Senkyaku Banrai" (Japanese: 千客万来せんきゃくばんらい)	TBA	TBA	TBA	August 16, 2024 (2024-08-16)
67	19	"Festival Eve" Transliteration: "Zen'yasai" (Japanese: 前夜祭ぜんやさい)	TBA	TBA	TBA	August 23, 2024 (2024-08-23)
68	20	"Nation's Opening Festival" Transliteration: "Kaikoku-sai" (Japanese: 開国かいこく祭さい)	TBA	TBA	TBA	August 30, 2024 (2024-08-30)
69	21	"The Martial Arts Tournament" Transliteration: "Butō Taikai" (Japanese: 武闘ぶとう大会たいかい)	TBA	TBA	TBA	September 6, 2024 (2024-09-06)
70	22	"Settling the Score with the Hero"	TBA	TBA	TBA	September 13, 2024 (2024-09-13)

The Slime Diaries (2021)

A more light hearted series showing the day-to-day lives of those in Tempest; taking place in the gaps between major events.

No.	Title	Directed by	Storyboarded by	Chief animation directed by	Original air date
1	"The Residents of the City of Monsters" Transliteration: "Mamono no Machi no Jūnin-tachi" (Japanese: 魔物まものの町まちの住人じゅうにんたち)	Shintaro Inokawa	Yūji Haibara & Shintaro Inokawa	Atsushi Irie & Kazuaki Morita	April 6, 2021 (2021-04-06)
Rimuru decides to keep a diary of the adventures experienced in this new world, remembering the trials and the friends made along the way. With the monster city growing, Rimuru and the council hold a meeting to help bring up everyone's morale. The Oni, Orcs, and Dragonewts enjoy their new lives under Rimuru's leadership.
2	"The Air in Spring and..." Transliteration: "Haru no Kūki to" (Japanese: 春はるの空気くうきと)	Kōsuke Hirota	Shintaro Inokawa, Lone Claire & Akihiro Ino	Atsushi Irie & Kazuaki Morita	April 13, 2021 (2021-04-13)
Rimuru gets to enjoy a rare break from work in Rimuru City, but quickly returns to old duties as boredom sets in. The inhabitants plough the fields and plant crops, including rice, to improve the city's food variety and production. Geld learns to appreciate the value of the less physically demanding gardening jobs, while Dryad Treyni is upset she didn't get invited to participate in the seeding.
3	"Summer in Jura" Transliteration: "Jura no Natsu" (Japanese: ジュラの夏なつ)	Shin Tosaka & Hiroshi Tamada	Shintaro Inokawa & Shin Tosaka	Atsushi Irie & Kazuaki Morita	April 20, 2021 (2021-04-20)
As summer arrives, its heat is causing exhaustion among the city's working population. To cool down, Rimuru enjoys some activities in the forest with a group of Hobgoblins, including bug-catching and a water fight. Back in the city, Benimaru takes part in an endurance contest to see who can best take the heat, but is taken out by Shion's cooking. Later in the evening, Rimuru enjoys a refreshing drink in Treyni's bar before heading to a lake lit up by fireflies.
4	"A Day in a Swimsuit" Transliteration: "Mizugi de Ichinichi" (Japanese: 水着みずぎで一いち日にち)	Yūsuke Yamamoto	Yūsuke Yamamoto	Atsushi Irie & Kazuaki Morita	April 27, 2021 (2021-04-27)
Accompanied by the Kijin, Gobta, Ranga, and Souka, Rimuru takes some time off at the beach. Shion and Shuna enjoy games on the beach with Rimuru, while Hakurou spends his time fishing with Gobta. Treyni and Gabiru are disappointed they weren't taken along, but Treyni joins the group anyway under the pretense of an inspection. Souka and Souei confide in their friends about their relationship with each other.
5	"Return of the Summer Festival" Transliteration: "Saigen Natsu Matsuri" (Japanese: 再現さいげんナツマツリ)	Shin Tosaka	Shin Tosaka & Satoshi Shimizu	Atsushi Irie, Kazuaki Morita, Hideki Yamazaki & Risa Takai	May 4, 2021 (2021-05-04)
Preparations are made for a Japanese-style summer festival in Tempest. Rimuru is creeped out by the usage of masks in his likeness, but is delighted, along with everyone else, with both the food served and games played at the stalls. The festival ends with a dance performance by the Dragonewts, a parade featuring Rimuru, and a fireworks show.
6	"Changes" Transliteration: "Utsuroikawaru" (Japanese: うつろいかわる)	Shige Fukase	Masashi Kojima	Miyuki Nakayama	May 11, 2021 (2021-05-11)
As the spirit of Shizu enters the village, the Bon Festival is announced, a festival to connect with your own kin and ancestors. Many townsfolk reminisce about the past. A number of changes that the Kijin have undergone after their evolution are highlighted. Shizu is embarrassed by both people's memories of her, and the outfits worn by Rimuru in the human form that resembles her.
7	"Here Comes the Demon Lord!" Transliteration: "Maō ga Kita!" (Japanese: 魔王まおうが来きた！)	Shintaro Inokawa	Tomomi Mochizuki	Yūichi Tanaka & Keiya Nakano	May 18, 2021 (2021-05-18)
Milim writes her own diary entry. After enjoying some food with Rimuru and the Kijin, she runs into Ranga and Gobta in town before returning for more snacks. To learn about the simple pleasantries in life, she watches Geld do construction work. In the evening, she rests while being carried on Rimuru's back, who has to repair the damage Milim's caused with her reckless behavior.
8	"A Fruitful Autumn" Transliteration: "Minori no Aki" (Japanese: みのりの秋あき)	Kazuo Miyake	Shin Tosaka, Matsuo Youko & Takayuki Tanaka	Atsushi Irie, Kazuaki Morita & Risa Takai	May 25, 2021 (2021-05-25)
Autumn arrives, and the citizens, supervised by Ririna, work together to harvest the crops planted in spring. Shion and Milim have potato-harvesting contests, while Treyni shows great fondness for the tubers, revealing she was born from a potato. The harvesters all enjoy their roasted sweet potatoes and gathered fruit. Treyni makes off with a supply of potatoes, planning to fry them and serve them at her bar.
9	"The Arrival of Winter" Transliteration: "Fuyu no Otozure" (Japanese: 冬ふゆのおとずれ)	Ryō Nakamura	Masashi Kojima	Yukiyo Komito & Atsushi Irie	June 1, 2021 (2021-06-01)
Winter is around the corner, so as the temperature drops, Milim finds enjoyment in resting under a kotatsu. Shuna prepares for winter by handing out personalised clothes to Rimuru and Benimaru. A delegation from Blumund makes their way to Rimuru City meeting Youm's party along the way, but they are mostly interested in Tempest's meat and potato chips. Youm tries to get used to the differences between monsters and humans.
10	"Snow Blankets the City of Monsters" Transliteration: "Mamono no Machi no Yukigeshō" (Japanese: 魔物まものの町まちの雪化粧ゆきげしょう)	Noriyoshi Sasaki	Satoshi Shimizu & Masashi Kojima	Atsushi Irie, Kazuaki Morita & Risa Takai	June 8, 2021 (2021-06-08)
Tempest sees its first snow, and a team is assembled to shovel the city's streets. After a snowball fight, Milim builds a Kamakura shaped like Rimuru where they eat sweets with some of the town's children. To warm up, Rimuru enjoys a hot spring bath built by Souei, accompanied by Shion, Shuna, Milim and Eren.
11	"Where Is Santa Claus?" Transliteration: "Santa Kurōsu wa Doko ni Iru" (Japanese: サンタクロースはどこにいる)	Kazuo Miyake & Munenori Nawa	Masashi Kojima & Shin Tosaka	Atsushi Irie & Kazuaki Morita	June 15, 2021 (2021-06-15)
Rimuru introduces Santa Claus to Tempest and has the dwarves help him set up a Christmas festival, complete with a tree and Santa outfits. Together with Milim, they get to enjoy a fancy Christmas dinner. Eren performs a Christmas song on stage with the children's choir. At the gift exchange, Rimuru is the intended recipient for many of the city's presents.
12	"Enjoying New Year's to the Fullest" Transliteration: "Shōgatsu o Mankitsu" (Japanese: 正月しょうがつを満喫まんきつ)	Shigeru Fukase	Tomomi Mochizuki & Shintaro Inokawa	Atsushi Irie, Risa Takai & Kazuaki Morita	June 22, 2021 (2021-06-22)
Festivities are held around the Japanese New Year. Rimuru performs an act of worship at the first shrine visit before learning that Rimuru is himself the deity revered at the shrine. A body double is left at the shrine to greet the line of visitors. Geld, Kurobe and three Hobgoblins form a team to make mochi, while Shion can barely enjoy dinner with the Kijin after losing to Milim in badminton and having her face inked black as punishment.

Visions of Coleus (2023)

A three episode-OVA that takes place between seasons 1 and 2.

No.	Title	Directed by	Storyboarded by	Chief animation directed by	Original release date
1	"To Coleus" Transliteration: "Koriusu Koku e" (Japanese: コリウス国こくへ)	Daisuke Tsukushi	Masashi Kojima	Tomoko Ito	November 1, 2023 (2023-11-01)
Yuuki asks Rimuru to investigate the Kingdom of Coleus, where a battle for succession has pitted the kingdom's two princes against each other. Rimuru launches a covert operation to sneak into Coleus and find out what's driving this conflict.
2	"Great Phantom Thief Satoru" Transliteration: "Dai Kaitō Satoru" (Japanese: 大だい怪盗かいとうサトル)	Michita Shiraishi	Satoshi Shimizu	Tomoko Ito & Sinomin	November 1, 2023 (2023-11-01)
Aslan visits Rimuru to thank him for saving his sister, Zenobia. They discuss her illness and Souther's behavior, and begin to suspect that the court physician, Gustav, is behind both. Rimuru dons yet another disguise to investigate further.
3	"Purple and Roses" Transliteration: "Murasaki to Bara" (Japanese: 紫むらさきと薔薇ばら)	Daisuke Tsukushi	Ken Ōtsuka	Tomoko Mori	November 1, 2023 (2023-11-01)
Rimuru confirms that it was Gustav who cursed Zenobia with illness. It turns out he and his accomplice, Carl, are Archdemons plotting to manifest their god using Zenobia as a vessel. Can Rimuru stop them before the Kingdom of Coleus is lost?

OADs (2019–20)

The first two OADs take place in between the major events and the others take place between season 1 and the OVA season.

No.	Title	Directed by	Storyboarded by	Chief animation directed by	Original release date
1	"The Tragedy of M?" Transliteration: "Gaiden: Emu no Higeki?" (Japanese: 外伝がいでん：Mの悲劇ひげき？)	Shintaro Inokawa	Masashi Kojima	Takashi Mamezuka	July 9, 2019 (2019-07-09)
Sick of Shion and Shuna's tug-a-war for his attention, Rimuru decides to make a cushion in his image. Acquiring spandex for the exterior, Rimuru is stumped on a substitute for Styrofoam pellets. Learning of a special sand that's similar, Rimuru takes a group to a lake to collect it. After avoiding Shion's cooking, Rimuru leads everyone in a swim to collect the sand. They are attacked by a monster that was driven insane by a rice ball Shion made; its slime dissolves everyone's swimsuits, and Rimuru settles the problem. Despite the success of the Rimuru cushions, Shion and Shuna continue Rimuru's tortuous tug-a-war; Benimaru and Souei can only pity their master.
2	"Hey! Butts!" Transliteration: "Gaiden: Hē! Shiri!" (Japanese: 外伝がいでん：HEY！尻しり！)	Makoto Nakata	Taizo Yoshida	Takashi Mamezuka	December 4, 2019 (2019-12-04)
Rimuru teaches the citizens of Tempest about sumo wrestling.
3	"Rimuru's Glamorous Life as a Teacher, Part 1" Transliteration: "Gaiden: Rimuru no Karei na Kyōshi Seikatsu Sono 1" (Japanese: 外伝がいでん：リムルの華麗かれいな教師きょうし生活せいかつ その1)	Atsushi Nakayama	Taizo Yoshida	Hideki Sakai	March 26, 2020 (2020-03-26)
Rimuru, who is teaching Shizu's students as a substitute at the Kingdom of Ingrassia's Freedom Academy, takes part in an orientation in actual field combat in the school's annual outdoor training event. Transfixed by the prize he gets if he wins, he accepts a challenge from the teacher Jeff. However, an enemy appears before the students...
4	"Rimuru's Glamorous Life as a Teacher, Part 2" Transliteration: "Gaiden: Rimuru no Karei na Kyōshi Seikatsu Sono 2" (Japanese: 外伝がいでん：リムルの華麗かれいな教師きょうし生活せいかつ その2)	Shige Fukase	Shinji Itadaki	Hideki Sakai	July 9, 2020 (2020-07-09)
Rimuru, now a teacher at the Freedom Academy in the Kingdom of Ingrassia, has become involved in the school's outdoor training event with his class. The outdoor training event is an annual competition in which the students of each class guard the teachers on a journey to a nearby town. Rimuru is assigned to Class A, while his own students in Class S escort the young Tiss-sensei. All the students are eager to show how much their daily training has paid off, but the situation turns around when they're attacked by thieves!
5	"Rimuru's Glamorous Life as a Teacher, Part 3" Transliteration: "Gaiden: Rimuru no Karei na Kyōshi Seikatsu Sono 3" (Japanese: 外伝がいでん：リムルの華麗かれいな教師きょうし生活せいかつ その3)	Ōri Yasukawa	Shinji Itadaki	Tomoko Ito, Keiya Nakano & Hideki Sakai	November 27, 2020 (2020-11-27)
Tiss and the Class S students have made it through the first exercise of the Freedom Academy's annual outdoor training event. Class S has arrived first at the destination, the mansion of Count Guratol, and now they're ready to begin the second exercise, a cave exploration... but awaiting them there are thieves (the same ones that Rimuru encountered earlier) who hope to kidnap the students and make a fortune returning them for ransom money. Just when it seems like Rimuru's students have fought them off thanks to the skills he taught them, they realize a monster is lurking among the thieves: a Spectre! It is too strong for them, but they are saved by Kuro.

See also

• List of That Time I Got Reincarnated as a Slime volumes
• List of That Time I Got Reincarnated as a Slime characters

External links

• Official website (in Japanese)
• Official website at Crunchyroll