Tengu Barai no Sankyoudai

Mamoru Yamaemori is bound to a life of isolation, battling Tengu—flesh-eating creatures—in the mountains above Japan. He manages the family shrine and dedicates himself to protecting his two younger brothers from the same fate. A dark ritual involving Tengu blood has trapped him in a role he cannot escape, one that will likely end in his early death. As he fights to keep his brothers safe, Mamoru must balance his identity as a caring older brother with the danger of losing himself to the beastly side of his duty. He fears that if he fails to maintain this balance, he may become the very thing he is sworn to destroy.