Yandere Boy X Reader

Y/N moves in japan, she goes to a regular high school. By 20 days of new school she has a strange feeling, like a sharp gaze at her back, but she just shakes it off like it was nothing. A mysterious boy sits next to you not talking always at lunch, while your eating below a cherry blossom tree hes just looking at you intensly.
he has blond hair that covers his blood red eyes, two heads taller than you. You know he's the most sporty in all school because his class has PE with yours. What will bring into your life, read and find out.