'Isagi Yoichi and Bachira Meguru' who are your childhood best friends.Who suddenly become very obsessive about you, but they won't tell you they are OBSESSED with you They are always attached to you.They will kill anyone who takes you away from them.One day, you walking in the middle of the forest.. And you feel that someone is following you every now and then.You try to run away, but they catch you.And, It's your own best friend, they are covered in blood.they kill you're boyfriend..