Obanai's strict and unforgiving nature. Obanai is a very harsh and strict individual who shows no concern for those who do not abide by the Demon Slayer rules.Obanai is also noted to possess an immense sense of self-loathing due to the fact that he was born to a selfish and immoral clan who would mercilessly 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 bandage he wears over his lower face