べるぜバブ

Tatsumi Oga, the most feared first-year at the all-delinquent Ishiyama High, fishes a man out of a river and watches him split open to reveal a baby: Kaiser de Emperana Beelzebub IV, son of the Demon Lord, immediately nicknamed Baby Beel. The infant latches onto Oga and refuses to let go, shocking his demon maid Hildegarde, who expected the Demon Lord's heir to bond with someone far more villainous. Stuck raising a demon baby who electrocutes anyone who upsets him, Oga drags Baby Beel through schoolyard brawls and rival-gang showdowns at Ishiyama.