A member of the Sawarabi Family, a branch family of the Niounomiya Troupe, and the eldest of the Sawarabi siblings. He has a vendetta against the Zerozaki Clan. His weapon of choice is a sword. Hawatari is calm and serious, being the quiet sibling. He pretends that he doesn't need family; but, in actuality, cares about them a lot.

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He wishes to avenge his sister's death by killing all the Zerozaki Clan members.

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Hawatari is the older twin brother of Naguma Sawarabi. They are able to swap places to confuse their enemies.