Episode 3

S1 E3: Oga loses the powdered milk that Hilda prepared for him, and instead buys a bunch of "Yogurty" from a vending machine for Beel. But it turns out that's the favorite drink of one of Ishiyama's Big Four, the "Ishiyama Tohoshinki"; the third year Kanzaki Hajime. Oga hears about how horrible and ruthless a guy Kanzaki is, and runs into the third year classroom to try and dump Baby Beel off on him...