Crimson Gray

Though Lizzie appears affectionate and devoted, it quickly becomes clear that she's so violent and unstable that a normal boy would run away from her. But when John sees her, he sees someone else suffering from a mental condition. John is willing to risk his safety for a chance to help Lizzie gain some mental stability. Lizzie is willing to murder everyone in school if she believes it would make him happy.

Your every choice will impact both characters' mental states, changing their fate. John might reject Lizzie, succumb to his depression, or die violently. Lizzie might lose control and ruin her chances, or become obsessed with shadowy conspiracies that may or may not exist.