Riku Ichikawa

One day, Nozomi Kuroda finds a love letter in her desk from the most popular boy at school, Jun Setoyama. Though embarrassed and puzzled, a secret exchange diary between the two begins when she puts her reply in the shoebox.

At an isolated reform school, transfer student Itsuki joins a drama group—but when real murders mimic their dark plays, fear, love, and secrets spiral out of control.