A ninja of the Oniwabanshuu who also works as an assassin. She is obsessed with natto, S&M themes and Gintoki to the point of stalking him.
sa-chan is a female ninja from the gintama manga and anime series, at first she is a badass female ninja with bad eyesite, then to escape from enemies she stays with gintoki and eventually falls in love with him because she is a masochist and he yells at her a lot . She will show up throughout the series trying to get gintoki to fall in love with her and fails, a lot, but she helps him out whenever she can
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