Akumano Academy

Akumano Academy is the name of the rebuilt Ishiyama High School after it was taken over by Behemoth's 34 Pillar Division. The academy was made in preparation for En's war game against Furiuchi, whom he believes to stole Lamia from him (through a misunderstanding).

In reality, the name itself was a lie that Furuichi came up to convince some of Ishiyama main students in their search for En, but ironically became true, much to the latter's surprise.

In the anime, the term is introduced early on as a fictitious school so that when they are battling the pillars, they say that they are students of Akumano Academy.