べるぜバブ

Tatsumi Oga, the most feared delinquent at Ishiyama High, pulls an infant from a man he finds split open by a river, and the baby turns out to be Kaiser de Emperana Beelzebub IV, son of the Demon King. With the demon maid Hilda insisting Oga raise the child, Baby Beel latches onto him and unleashes electric shocks whenever the two are separated. This shounen manga sets Oga's brawls with rival toughs against the chore of fathering a future world-destroyer.