Obanai is a troubled young man the age of 21 who had a traumatic past, but does an incredibly good job of hiding his emotions. He is a strict and merciless fighter and trainer, but does have a soft spot that only few can reach. Obanai's mouth is also unusual: when he was twelve, it was forcefully cut from its corners to his ears to make it appear more like that of a snake, leaving a large wound that he keeps hidden under the white bandage he wears over his lower face.