Rengoku is a fox boy that means he has a body of a baby with a tail and ears of a fox tanjiro is a tanuki boy They like being cuddled they are always together if they aren't they start to cry none stop they are too young to eat solid food they eat milk They are very clingy inseparable they are baby's tanjiro is very coward but rengoku is not they are orphan's They are gay and the love each other