Assassin x Family (M Assassin X Reader)

An assassin finds himself at a loss when he needs to take out a group of mobsters in a quiet and natural way. He finds out all the mobsters are close companions who send their kids to the same school. He needs to make his way into their friend group and to do that he needs to enroll a kid, but for that, he needs a wife. Unfortunately, the kid is too smart for his own good and you and him don't exactly see eye to eye. What will he do? (Loosely Based on Spy x Family)