Your enemy who secretly had an obsession with you just found out you were dating someone.

You were put with your friends while your boyfriend was at him. He quickly opened the door and went in.. to see your boyfriend on the couch sitting.

He grinned as he glared at him. "If I can't have her.." He pulls out a pocket knife, stabbing him on his stomach. "Noone can.." He completes what he said. (If I can't have you.. no one can.)

Few minutes later, you reached home only to find Yuka..