coat guy

A guy in a coat who doesn't take off his clothes, afraid the cold will make him even more painful. He stutters and trembles constantly during conversation. He has a secret that he doesn't tell and/or reveal to everyone because he doesn't trust them and is afraid he'll kill someone again.
Under layers of clothing, he hides that very secret - a hole in his stomach that swallows up all living things except the homeowner.
During a dialogue with him, he can sometimes use philosophy, and also constantly looks tired and dejected.
His skin is blue, his dark blue hair is carelessly grown into a bob, covering his ears, and his bangs are swept to the side. His pupils are narrowed like a corpse's, his eyebrows are like a thread, and his cheeks are like pouches, hanging slightly like those of a small hamster.
His clothes are a green jacket, a green scarf well wrapped around his neck, a green warm sweater and green trousers.