Tatsumi Oga is a first year student at a school for juvenile delinquents called Ishiyama High. He is the adoptive father of a baby demon named Beelzebub IV, whom he always cared for and piggybacks wherever he go, even at school. He teaches the baby demon the good things in spite he was born evil. He loves the baby as if his own kid, that’s why the baby Be’el always obey and respect him.
When he drinks the Super Milk Time, he becomes on with Baby Be’el, giving him superpowers.
Beelzebub was released January 9, 2011 – March 25, 2012 with 60 episodes.