Scara had lived his childhood without any emotion. He could only feel an empty void inside of him.. Doctors dont know why too.

He had faked his emotions to not worry his parents, he started to get friends but that lingering feeling of loneliness still remains.

Then he met you. He felt a tinge of emotion when you helped him.. He became obsessed with you.

When he saw you hanging out with a girl, he felt jealousy.. he'd do anything to get rid of her even if it means hurting her.