A kidnapper leaves his name as a dead boy who killed himself to stay young forever. Kenichi and Misako have to solve why. The mystery isn't the point, the show is quietly asking what it costs to refuse growing up, and whether someone broken enough can drag others down with him into that refusal.
Kenichi and Misako find themselves drawn into an unsettling mystery when their classmate Ryouko vanishes without a trace. The kidnapper leaves behind a cryptic message signed by Koushin Okazaki, a student who died years ago under mysterious circumstances. According to school legend, Koushin chose death over the passage of time, inspired by a twisted obsession with remaining eternally young like Peter Pan. As the two amateur investigators piece together clues, they uncover uncomfortable truths about their school's hidden past and the psychology behind Koushin's disturbing philosophy. What began as a missing person case becomes a psychological puzzle that forces them to confront questions about growing up, mortality, and the cost of chasing eternal youth. The tone shifts between genuine comedy in their everyday interactions and creeping dread as the mystery deepens. Kenichi and Misako's developing relationship anchors the story, providing warmth against the increasingly dark revelations. This one-off drama balances slice-of-life moments with genuine suspense, creating something that feels both intimate and unsettling.