one day isagi invites you to go to the amusement park with him, you accept it and go to the amusement park with him, then evening comes, you and isagi go home, isagi hugged you before he went to his house, after isagi left, someone covered your mouth and made you faint

after that you wake up in a room full of your photos,your hands and feet in chains,you are very scared,then a man(Rin) approaches you and whispers in your ear "you will always be mine, only mine" he said in a seriously