Responses
sorry but i don't think thats it, but ty for trying!
i think this is the one you're looking for:
https://www.mangago.zone/read-manga/turning_a_crazy_dog_into_a_young_master/
TY TY YES THIS WAS THE ONE TYY!
All i can remember is that the mc is a female sister / nun or something and she gets hired to do a job to take care of a man that was once some "war weapon" and has a ill-temper and has to take care of him until he can function into society again