A timid girl high school student, Sonoko Ishii (Emi Suzuki), has two important friends at her high school. They are Sonoko's boyfriend Satonaka (Kei Tanaka) and her best friend Miyuki (Erika Okuda), a delinquent high school student. Sonoko is suffering from depression due to "bullying" by a girl in her class. Miyuki, on the other hand, is a "wrist-cut" addict due to a terrible experience she had in her childhood. Satonaka is a good guy who tries to support them both. Then one day, unexpectedly, Satonaka and Miyuki have a big accident.

There are many different kinds of lives in this world. When everyone is gone only the afterimage remains.Ai has only recently came to Tokyo. In this unfamiliar city she is a little bit upset. One day lead by a mysterious stray dog she finds a letter inside a hole in the tree trunk. Tomohiro who works night hours at a nursery hadleft it there. Ai being encouraged by this letter writes a letter back and leaves it in the hole. This was the beginning of their strange correspondence.

Saori is a high school student at a provincial city. She is a member of playgroup at her school. Yoshioka begins to work at the same high school as a new teacher. Yoshioka performed in plays when she was in college back in Tokyo. Saori, Yukko, Garuru, Nakanishi, Akemi decides to compete in a play competition. Their goal is to make it through the regional competions, but Teacher Yoshioka tells them their aiming low and that they should think about the national competition.