Episode 5

S1 E5: On the back of Oga's fist a mark appears that is proof of his contract with the son of the Demon Lord, Beelzebub... The Zebul Spell. After hearing that the demonic power grows as well as the Zebul Spell the more he gets into fights and runs wild, Oga decides not to fight anymore to avoid that situation. However, Himekawa Tatsuya, heir to the Himekawa Zaibatsu and one of Ishiyama's TKKH like K...