Kaito Mifune

A tragic accident lead to Kaori's blindness, but she clings to life and the smaller pleasures it can still afford her. She meets Rui and begins to talk to him. Rui was once a promising kickboxer, but something happened in his past. Kaori's smile brings out a change in Rui. However, the two are connected in more than one way. Rui attempts to do what is right.

Akari is a first grade high school student. She is positive, realistic and outgoing with romance. Akari though is not good at expressing her feelings. She become friends with Yuna, who attends the same high school. Yuna has a hard time talking with strangers and she is passive with romance. She has never been in love, but she dreams of having a romance like those drawn in manga. Even though Akari and Yuna have totally different personalities, they are now good friends. Yuna gets attracted to Rio who is Akari’s stepbrother and attends the same high school. Akari becomes attracted to Kazuomi, who is Yuna’s childhood friend and attends the same high school.

Two sets of parents divorce and marry each other, while their children Miki and Yuu are caught in the middle and start falling for each other.

With graduation 10 days away, homeroom teacher Hiiragi gathered all 29 students of class 3-A and proclaims them his hostages. His last lesson regards the death of a student that passed away a few months before. Nobody will be able to graduate until the truth is known.