Kouto Onmyou Gakkou: Kizumono no Hanayome Gaiden

The Imperial Capital Onmyo School is a three-year residential academy that supplies exorcists to the Imperial Onmyo Bureau, the state body charged with putting down demons. Second-years Yakou, Kazunari, and Reiji land in trouble when Reiji wounds the son of a military official and faces expulsion. The headmaster agrees to let it slide, but only on one condition: the trio must track down and capture Semimaru, a masked assailant preying on the aristocracy.