Tsuboi Fu

Kujo Rina is a chemistry teacher and the homeroom teacher for the 3rd grade D class at Horai High School. She doesn't have a bond with her students. On the school's graduation day, Kujo Rina is pushed from the 4th floor and falls down. She is able to glimpse a school uniform sleeve on the person that pushed her. At that time, she wonders why she was pushed and that she does not want to die.

Iwami Shinnosuke, a second-year high school student in Shimane, wanted to go to Tokyo as soon as he graduated from high school in order to become a musician. Shinnosuke was still playing the guitar on the roof of the school today, but there comes a transfer student from Tokyo, Kyoko, and a childhood friend from kindergarten, Oki Tatsuya & Izumo Hiroto. Kyoko is a transfer family and has no hometown. With one word of her, Shinnosuke's daily life begins to turn into a drama.