1st Degree: Murder-Mystery BL/Yaoi VN [UPDATED DEMO]

About This Game

Currently seeking a new studio to take on the full project starting in 2026.

A city on edge as a serial killer roams the streets...

Frustrated by one unsolved murder after another, forensics graduate student Rei Kuroshima decides to get his hands dirty to solve the crimes. He resolves to copy the killings to chase the serial killer known as "The Doctor" in order to figure out how the murders were accomplished. Along with his supervisor Aiden Steele, a detective oblivious to Rei’s identity as “The Copycat” killer, he must piece together a trail of evidence to uncover the identity of “The Doctor.” At school, however, Rei must maintain his normal student life while dealing with his obsession.

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Have any questions you'd like to ask the development team? Send us an email! We'd love to hear your comments and questions about the game! Just send us a message at

parivalgames@gmail.com