Akazukin

Akazukin is actually the wolf of Taishou x Alice's Little Red Riding Hood-themed story. Under his hood are a pair of wolven ears. His mother raised him to believe everyone around him are "wolves" and to not interact or to trust them, however, this is implied to be a way for his mother to keep her "different" son away from public view. He is childhood friends with Ookami until an incident involving Ookami's grandmother caused him to leave and never contact Ookami again.