Mika Kasahara

How does a teenage girl shed her virginity? She is horny, curious and dying to have sex. It is so bad that she cannot take her eyes off the teacher's crotch. Well, the usual and time-honoured way is the answer. She joins a virgins' club at school and practices showing off her body, underwear and up-skirt. It is not so easy though. It takes practice, but she has little time before she and the boy she is tutoring get together.

when rumors about students who played at hitori Kakurenbo (sort of hide and seek alone with a ghost) propagate in high school, Shiori can no longer join his older brother Motoya. On his way to the apartment he is supposed to live, she found an empty room. But an internet forum unearthed on the computer of her brother leads her to believe that the disappearance of the latter may well be linked to this sordid game of hide and seek. Despite attempts by her boyfriend Noboru and his best to reassure her friend Yuko, Shiori is beginning to be convinced that something he wants her too and tries to track down. It will then turn to Shiraishi, a former classmate of her brother, trying to understand what is happening and return Motoya.

Manami, who runs a small pharmacy, learns that junior high schooler and frequent customer Emi has a crush on a classmate, and is reminded of her own youth. Eventually, Manami's desire to support Emi gets out of hand.

Yuko is a high school girl living in the suburbs. She had feelings for Toyama without telling her best friends Eri and Shiho. However, in the fall of her senior year of high school, Eri begins to express her “interest” in Toyama. In order to further research Toyama's tastes, Yuko ends up going out with him on the promise that she will stay with him until the school festival.

Takeshi Hongo is a promising young man with a passion for motorcycle racing. However, his dreams are suddenly ruined when he gets kidnapped by Shocker, the evil secret organization planning to dominate the world. After being remodeled into a cyborg, Takeshi escapes and swears to protect the world from the inhuman monsters.