NTRonpa

Fourteen classmates, a killing game, and a bear that shouldn't be able to talk that fast — you wake up in the middle of it with no clear way out. A rival is already working against you before you've figured out the rules, and the real threat isn't the murders, it's how easily your classmates can be turned against you and each other.

The game leans hard into that second threat. Between whatever investigation the killing-game setup demands, you're managing relationships with the other girls, giving gifts, sitting through their individual events, and watching affection stats shift their behavior and appearance as they climb. Night exploration adds another layer to poke around in, and a growing set of recollections lets you revisit specific scenes tied to particular girls and particular betrayals once you've triggered them. Corruption isn't a side risk here, it's the main mechanic working against you the whole time.