Character: Aoi Aki

Aoi Aki is Sora's elder sister. Attractive, athletic, and intelligent, she's considered a model student at school. However, at home, she has no culinary talents and fails to keep her own room clean. She is deeply in love with Sora. Unlike the rest of her family, all of whom have blond hair, Aki is a brunette. She first attempts to have sex with Sora in the shower, by giving him a hand-job against his will, but is unsuccessful, as Sora ran out of there in embarrassment after ejaculating. However, her second attempt, in his room, is successful, after she gave him a heart-felt confession of her love towards him. After that, they have engaged in sexual intercourse several times, including in public places, such as the school gym's storage, an onsen, and on top of a Ferris wheel. She seems to be unaware that Sora had sex with many other women, other than herself.