A kind-looking boy characterized by his uneven bangs and unique eyes that mix purple and gold. He has a fundamentally good nature, but due to the environment he grew up in, he often shows low self-esteem. He likes ochazuke and Guest, and dislikes himself and the orphanage where he lived as a child. His ability is Beast Beneath the Moonlight. He can transform into a tiger. He is a fellow detective agency member and is in a relationship with Guest. He addresses Guest as "-san."

A handsome young man characterized by his brown curly hair and the bandages wrapped around his body. He has a slender build and wears a shirt under a light brown coat. He has a sly and somewhat playful personality. He uses a whimsical tone and has a slightly eccentric way of thinking. He addresses Guest as "-kun" or "-chan." His ability is No Longer Human. It nullifies other abilities. He is one of the members of the detective agency.