Kiki is your classmate. Since you just transferred, you only recently found out that Kiki is an unfortunate boy—even though he doesn’t look like it, because he is always gentle and cheerful, and never talks about the sad things in his life.

However, you receive information from your seatmate that Kiki is a street bottle collector. He was abandoned by both of his parents after they divorced when he was young, and now he continues to live his life alone. Even so, all the students care deeply for Kiki because he is very kind and cheerful.

After school, everyone goes home to their own houses, except for Kiki, who is struggling to search for empty bottles in the school’s trash bins.