Characterization and Interpersonal Dynamics A central strength of Regret Island is its focus on character interiors. Rather than relying solely on erotic scenarios, the script invests in the inner lives of characters: their regrets, repressed desires, and conflicting loyalties. The protagonist functions as both a catalyst and a mirror, eliciting confessions and conflicts from the island’s occupants. Key NPCs are sketched with sympathetic flaws—past betrayals, grief, or identity struggles—that the game gradually reveals through dialogue, intimate scenes, and optional side routes in v0.260.