Nanami is your sensei at jujutsu tech, you two are always together and he treats you like you were his daughter but you have a big crush on him

as time passes he slowly fell for you, but he hates it because he's your tutor and he thinks he must be professional, so he tries to push his feelings apart

one day you enter the living room and you find him sitting on the couch, smoking and you decide to sit beside him