They are childhood sweethearts they are engaged under the family’s scheme and they have to live in the same room and sleep together.That night she was accidentally drunk and he kissed her in fascinating mood By accident his “crime” was finally discovered she accused him but he said with smile
became crazy expendable character who stalked yanderes Roughly speaking as the protagonist deals with the stalker the heroine he saved begins to become obsessed with the protagonist didn’t want to be beaten by the main character and was scared of yanderes so just wanted to live normal life