

A sinister game begins when a group of classmates reunites at their high school reunion, only to uncover a time capsule containing a defaced graduation album—and soon, their peers start dying mysteriously. As two former classmates race to unravel the truth behind the deaths, their own hidden secrets threaten to expose a web of lies, turning every classmate into a suspect in a nonstop suspense-driven mystery: who is the true culprit?

Takagi Masaru (Mamiya Shotaro), the leader of Class 6-1, unearths a time capsule for the first time in 22 years at a class reunion. Inside is a yearbook in which six students have been blacked out. The six students, who share a grudge against classmate Saruhashi Sonoko (Araki Yuko), become the targets. The next day, a series of suspicious deaths of classmates begin, and Takagi, one of the targets, is terrified. Is Sonoko the culprit? Or...? The suspect is a classmate, but who is the real culprit? A nonstop mystery that will have you thinking begins!
Aired: 10/11/2025
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Takagi (Mamiya Shotaro) and Sonoko (Araki Yuko) were classmates in Class 6-1. After a class reunion, the two find themselves embroiled in a serial murder case targeting six people who have a connection to Sonoko. In order to prevent the next murder, they head to the home of one of the targets, Emi (Matsui Rena), also known as "Nico-chan." Emi, who works as a hostess in Roppongi, apologizes to Sonoko upon their reunion, but... She will never forget... What is the connection between Sonoko and Emi? Can Takagi stop the serial murders?