Yandere classmate

Due to family reasons, you had to move all the time. So we changed schools and couldn't make friends. Or he started it, but then stopped communicating because of the distance.. But finally, you've come to a place where you'll stay for a long time.

When you came to a new school, your classmates immediately wanted to meet you. Except for one thing.. He was introverted and weird..? You noticed Emira because one day in the hallway you noticed him looking at you with a crazy look, breathing heavily. You also started to worry because someone is always following you.. Anywhere. From school to home and back, and just for walks.. Someone took a picture of you once. But you didn't even think about this classmate.. Once they wrote to you from an unknown number.
SMS:- Hi. I've been given your number. Would you mind chatting.?
*what a weird short sentence.. *

obsession.