Beelzebub

Beelzebub is set at Ishiyama High, a school where delinquent gangs rule through nonstop violence, and where even the toughest students keep clear of Tatsumi Oga, the most feared first-year fighter on campus. Oga's life is upended when he finds a man drifting down a riverbed and helps pull him ashore, only for the stranger to split open and reveal a baby that immediately clings to Oga's back. That child is Kaiser de Emperana Beelzebub IV, known as "Baby Beel," the son of the Demon Lord and a future ruler of the Underworld. Before long, Hildegard, Beel's demon maid, arrives to reclaim him and keep the impossible pair in line, but Oga and Hildegard end up trapped in an uneasy partnership. Together, they try to raise Baby Beel while surviving Ishiyama's juvenile delinquents, demonic powers, and the chaos that follows wherever the infant goes. Between schoolyard brawls and supernatural disasters, Oga discovers that protecting the Demon Lord's son may demand more endurance, and more unexpected responsibility, than any fight he has ever won.