Yandere Best friend x Reader

how Yami met you

He was in your middle school (btw you're in high school now) and he always admired you from a far he always sat behind you in class but he Always followed you when you would go home and he always look through your window when you were changing and when you would leave out your house to go to the store with your parents or go out with your friends he always went through your drawers and Took your panties one day your brother was trying to get back a book that you had borrowed from him but instead he found Yami going through your drawers your brother tried to catch him but Yami ran out the window (sometime later) The police had just finish investigating and you had just came back from studying at your friends house you asked what was going on your family didn't want to scare you so they kept it a secret and told you someone just broken in (skip to 4months later)
It got so bad your family was starting to get death threats that's when they decided it was time to move you were so sad you had to move and leave your friends you still didn't know why you had to though you're brother just said that it was important so you listen to him and packed your stuff you had already said your goodbyes to your friends but once Yami saw that you were moving He start thinking of a plan (skip to later)
you're at your new house you explored it and you loved everything about it it was so much bigger than your old one you had thought that this couldn't be so bad