Beelzebub

Tatsumi Oga, a delinquent student at the worst high school in Japan, arrives at school with a small baby who emits massive shocks of electricity whenever he cries.

Tatsumi's family get a different view of the situation when Hildegarde presents herself in front of them in a wrong way. She tells them that Baby Beel's cries may destroy the city.

Tatsumi loses Baby Beel's food. When he feels hungry Tatsumi uses up a vending machine's yoghurt drink, which is a third year delinquent Hajime Kanzaki's favourite drink.

Baby Beel's non-stop urination threatens to flood the city. Hildegarde manages to stop it temporarily using an inter-dimensional nappy but Tatsumi decides to get a super absorbent nappy.

Tatsumi is surprised to find a strange mark on his hand. Hildegarde and Alaindelon tell him that the mark, which is a sign for his power, will grow bigger when he fights more opponents.

The mark on Tatsumi's arm goes back to its small size. Hildegarde brings a play room for Baby Beel but it turns into a magical cage that traps Tatsumi and her.