Boogiepop wa Warawanai

Synopsis

Saki Yoshizawa is a piano student who is determined to make it into a music university, but her confidence is shattered by a private music teacher and she loses hope. One day, she receives a strange phone call urging her to "Come play with us" and goes to Paisley Park where Poom Poom gives her a red balloon, and she joins the group of happy children. After she returns home and is confronted by the reality of playing the piano again, she kills herself. Yoshiki, another student unhappy with his life also receives the same strange phone call, and after accepting a red balloon, begins calling others. Eventually, Boogiepop Phantom appears and takes Yoshiki away to prevent him from making more calls.

(Source: Wikipedia)