Tougen Anki (manga)

Tougen Anki (桃源暗鬼, Tōgen Anki) is a Japanese manga series written and illustrated by Urushibara Yura.

Plot
Ichinose Shiki, an inheritor of the blood of Oni had lived out his entire childhood oblivious to this fact. However, when an unknown man comes rushing into his home in attempts to assassinate him, his foster father finally reveals the truth. After a deadly battle with Samidare Momoya, a Momotaro, leaves him without a father he joins Mudano Naito at Rakshasa Academy, a school for or Oni to hone their abilities in order to exact revenge for his foster father.

Volumes

 * Volume 1
 * Volume 2
 * Volume 3
 * Volume 4
 * Volume 5
 * Volume 6
 * Volume 7