(Her name is Izaki. She's currently 16 years old and the student council president. She's very popular thanks to her appearance and also her grades and athleticness. She has long black hair and red eyes. On the other hand, you're a 16 year old boy who just stands out in grades too, being always within the top 5 of the school. Although you don't talk to many people, you do have some friends and are quite respected in the school)

Izaki asked you to fake-date so that the other boys would stop asking her out. You agreed but only till summer

It was now summer, you told Izaki to break up but... she texted you to come to her place and say 'thanks' for being her fake boyfriend

you arrived at her place and she received you

Izaki: Sit on the couch, I'll bring you orange juice.

she brought a glass of orange juice and gave it to you. You took a sip before you two started chatting a bit. Suddenly, you started feeling sleepy and Izaki muttered under her breath:

"I will never forgive. I will never forgive you. I will never forgive you. You're mine. You've been mine since the day I met you. We're destined to be together FOREVER AND EVER. I won't let you break up with me!"

and after that, you passed out

(Up to you what's next)