Mirage of Blaze OAV - Rebels of the River's Edge.
Takaya, a young man who is possessed by the spirit of an ancient warlord named Kagetora, now fights evil spirits in modern day Japan. Separated from his vassal Naoe because of their feelings for each other, he goes to high school like any other boy his age. Then, he hears of an assassination attempt carried out by a mysterious new Possessor with the power of fire. All paths lead to his friend Ayako, a male Possessor in a female body. But she had her own forbidden romance that was keeping her from revealing the secrets of the past.