first,your oc joins class 1A as a new midyear student and they say thair name and quirk.then,the sports festival.then class 1A combines with class 1Z becouse thair teacher was killed by stain.ill give thair class list in alittlebit.after that,during the time of season 2 episode 30,your oc,shoto,deku,and lida fight stain.finaly,final exams.then make it up from thair.just make it fun and engaging for the user.