All Mens Bath: Due to the fact that the school has only just become coed, there were no bathing facilities for the male students.All Girls Bath Hall: This is where all the girls take the baths, and for some reason the place a battle between Rintaro and Ayane's friends and subordinates, Keiko and Makoto, took place after Rintaro seemingly 'defiled the sacred place' (Makoto's claims).In respect of their immense strength they have been named Dragons. As a result, the student body is currently split into a three-way war between three individual factions led by third-year Kyōka, second-year Rino and first-year Ayane. Nangokuren High School has an overly violent culture, and abides by the law of nature where the strongest survives, while the weak perishes. Manly Hell Forge) is what had attracted Rintaro as he had mistakenly believed it was an all-boys school.

As such, the population of the school was comprised of 99.9% females, with Rintaro and his friends seemingly being the only male student in the academy.

Before Rintaro enrolled into this academy, Nangokuren High School was formerly an all-girls school, that had only recently changed to co-ed.

High school anime with dragons