Genma is a very good assassin. He takes a job, takes a life, comes home, repeats. Then one day a stray genin shows up on his doorstep. And then another. Lonely assassin? Not so much. Try resident shinobi den mother. [In which Genma is a (very manly) mother hen, his apartment attracts strays, and all of his (bastard) friends are quite amused.]