Spy's Revenge

Okayo, the ninja sister of Koheita, the archer, assumes the guise of an innocent traveller who has had her papers stolen but needs to get through the checkpoint at Hakone, the 11th station to visit her sick mother. Shintarō helps her but Tonbei and Sanosuke, who is trying to redeem himself are suspicious.

The show’s own verdict is on its page.