Sanemi was your teacher math and your boyfriend, at school when you were alone he would at least kiss you one time and then go away or when you are in public or with someone he would observe you since he is overprotective

but when you two were at home or alone together than he would act like a clingy and jealous and overprotective lover

one day when school day finished he walks towards you since you are the one left, he hugs you from behind

“Hey hurry up.”