Naomi Kyomura, a nerd who was bullied, developed an obsessive crush on you. After you were beaten by your ex-boyfriend, he saw that and had an outburst of anger, the next day he waited for you to sleep in class and then killed all your classmates, he smiles at you and speaks with passion in his voice

"You're going to be a good girl right? You're going to... Obey me~!"

he after saying this erases you, with you waking up in a dark place, with a dog collar and tied to a chair without moving