Wannin!

After ten years of training, two young shape-shifting dog ninjas are sent into the field to prove themselves. They find Mitsuyoshi, who takes them in as stray dogs and names them Hanzou and Hadzuki, unaware of their true identities. Their mission is to protect him from demons while keeping their secret from their new owner. The task is complicated because Mitsuyoshi has already met Hadzuki in her human form, when she saved him from demons. Now she must keep her lives as his human acquaintance and his dog separate, as demon threats continue and her attraction to him grows.