Ushio (ウシオ) is Oumi's daughter and the second successor of Hayase's will.
Ushio has long hair braided into a bun on the left side of her head. It is held together with a bow. She wears the standard Defense Corps uniform that all leaders wear and she carries a long sword on her back.
Not much is shown of Ushio, but it can be assumed that she was similar to her grandmother, being too friendly towards Fushi. She can be seen hugging and clinging to him.
It can be assumed, as with all other descendants of Hayase, that she has been taught to love and protect Fushi.
After an unknown period of time, Ushio finds Fushi and introduces herself as the second successor. She is then seen clinging to him before Fushi pushes her away.