Beelzebub Episode 25 -

: To keep them away from the regular student body, all the significant "bad" students are lumped into a single classroom.

: The episode sets the stage for the Saint Ishiyama Academy Arc , introducing the concept of the Six Knights (Rokkisei), the school’s elite group tasked with keeping the delinquents in check. Beelzebub Episode 25

The episode focuses on the "culture shock" of the rowdy Ishiyama students settling into their new, highly disciplined environment. : To keep them away from the regular

: The new homeroom teacher, Sadohara , attempts to assert dominance by challenging the strongest delinquents. : The new homeroom teacher, Sadohara , attempts

: Sadohara first challenges Hidetora Tojo to an arm-wrestling match, only to be slammed into a wall. He then turns his attention to a sleeping Oga , but the situation escalates when Baby Beel is woken up and throws a tantrum, shocking both the teacher and the class. Key Plot Developments

Directed by at Studio Pierrot , this episode originally aired on July 10, 2011 , on Nippon Television . It serves as a major transition point, moving away from the internal gang wars of Ishiyama to a more structured conflict against the academy's elite.