A Wish of my Sister (お姉ちゃんのお願い, Onee-chan no Onegai) is an erotic one-shot Japanese manga written and illustrated by Masahiro Itosugi about a series of short stories, where the relationships of Keisuke, his sister and his classmate take up four of the total eight chapters.

Keisuke's classmate, Kotomi, finds out that he cross dresses and blackmails him into having sex with her.

Due to water problems in the apartment block, Keisuke's sister takes him to the public bath with him in a wig.

His sister teaches Kotomi how to perform fellatio and allows them to continue having sex while she walks out of the room.

Later, Keisuke's sister convinces him to go walk Kotomi home, and they confess their feelings in the park.

Towards the end of the festival, Chika exposes her breasts to her brother, pleading him to satisfy her sexual needs.

These supple, rounded nymphs could easily be mistaken for lolita hermaphrodites, which may well be their creator's intention".

[7] Japanator's Brad Rice commends Itosugi's "very clean, appealing, and playful" artwork.

He further commends that "there will be a page or a couple of panels where the mood takes a sharp turn for the serious, and people confront the feelings that are at-hand."