First Shibuya High School was an upper-secondary school before the apocalypse. It was run by the religious sect known as the Order of the Imperial Demons who were lead by the Hīragi Family. The school specialized in training magic users which the public had no knowledge of.
Nearly every student at the school was the son or daughter of a clan that belonged to the Order and believed in it's teachings. However, it was a school for the elite; only the best and brightest of students were chosen to attend from adherents throughout Japan.
The school is one of the settings in the Seraph of the End: Guren Ichinose: Catastrophe at Sixteen light novel series.
The students wore typical Japanese uniforms. They wore pins signifying the Order.
The male students wore a black gakuran with a standing collar with red trim which was also around the cuffs. The school emblem was located on the left breast.
The female students wore a sailor fuku which consisted of a blouse with red trim around the collar with a grayish blue sailor-style collar which also had red trim and a similarly colored skirt with a belt. The red uniform ribbon which was thinner than normal sailor fuku, was attached to the bottom right end of the collar. The school emblem was located on the right breast.