You're the last person I want to be stuck with!

First year student Kohinata Ayumi is asked out by her crush, Shiro! While waiting for her first date with Shiro she receives a mysterious call from one of her classmates, Umine Senko. She then witnesses Umine fall off a building?! What on earth is happening...?!

After visiting her deceased teacher's grave, a guy suddenly falling of the staircase where Asahi Sena ended up saving him. That guy, Itsuki Tobari turned out to be her deceased teacher's younger brother. They started to talk about things from the past, about the dead of Itsuki's sister and an 11-year-old boy who killed her, who was Sena's best friend. What happened to the boy who killed her now? Together, they start to find out what did actually happen during that tragic day.

During a rainy day, Samon stopped at a flower shop to take shelter from the storm. There, he met Koito, the girl from that store. After that, when he finds himself involved in the love affairs of his classmates and finds himself alone in his class, Samon projects his fury on Koito saying "What amuses you so much so that you are always smiling?" and ends up hating himself. That made Samon anxious, and on graduation day, for some reason, Koito gives him a diary. Actually, Koito admired Samon. In there, one line caught his eye, "Life during middle school was fun because you were there..." Despite hating himself, Samon likes the things written about him in Koito's diary. Time passes and upon entering the second year of high school, he reunites with Koito, who enrolls in the same school...

1. Ao ni Koubou (The shaft of light in the blue.)
2. Ame ga Yandara
3. 17-sai no Hyouhon
4. Hanasaku Marble

Facial communication, no words necessary.

(Source: Delish Scans)