Beelzebub: Hirotta Akachan wa Daimaou!?

"Strongest juvenile delinquent" Oga Tatsumi, in the most random events, finds himself with the infant son of the Great Demon King and threat to humankind, Beelzebub. After being "greeted" by the baby's maid and caretaker, Hilda, it become obvious that Beelzebub doesn't want to leave Oga's side. With his close friend Furuichi and a bunch of other characters on hand, Oga now must raise baby Beel and prevent the world from destruction. <em class=de-emphasized>(from manga)</em>

Synopsis from Anime News Network