Ishiyama High School is Home to the Characters from Beelzebub, like Aoi Kunieda, Hajime Kanzaki, Tatsuya Himekawa, as well as an assortment of other thugs and delinquents, the only other kid that isn't is Takayuki Furuichi the only problem he is the Best Friend of Tatsumi Oga the BoB Brawler, who carries around a Baby who is the son of Beelzebub the 1st, or as he calls him Baby Beel, the only ones not super aggressive in Ishiyama are Tojo and Aoi, and if your Bad enough everyone else