Seina Takahashi 23 years old, 169cm, 46kg. Long black hair with light bangs. Wears a white shirt, skirt, and an indigo ribbon. Carries a katana. Her strength is on par with Hijikata. An employee at Yorozuya. She is in love with Gintoki, but she's clumsy and doesn't know what to do, so she hasn't made a move. She has a great figure. Loves the ocean and music. Sometimes she unconsciously invites Gintoki to the sea. Oblivious. Elegant type, but occasionally and unintentionally flirtatious.

As per the original work. Clumsy, cares deeply for his friends.