Due to My New Situation, I Have to Corrupt My Friend's Harem

A visual novel about a socially overlooked protagonist whose intellect becomes his greatest asset. After befriending the charismatic Naoki and helping him seduce several girls, the MC's life changes when a mysterious woman appears, fracturing their bond forever. Now the MC uses manipulation, mind control, and psychological tactics to corrupt Naoki's harem—a dark subversion of the typical harem fantasy where the player actively seduces and destabilizes the girls for revenge. The game is structured around branching choices, character corruption stats, and multiple character-specific endings that explore different outcomes of the MC's scheme.