Kumitantei: Old-School Slaughter

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Kumitantei: Old-School Slaughter is an episodic murder-mystery ADV cardbattler that fuses retro anime analog horror with killing games. Players navigate a 1989 alternate Japan setting where sixteen elite students are trapped in a kill-or-be-killed Apathy Experiment. Core gameplay involves deckbuilding, detective investigations, and clinical trials to solve murders while bonding with classmates. The game features retro anime aesthetics inspired by Urusei Yatsura and classic Japanese mystery games like Danganronpa and Ace Attorney. It emphasizes character-driven narratives, evidence collection, and strategic card-based combat to survive the experiment.