Ep. 4: Father that Never Returned

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Mikage decides to investigate; she runs across the swordswoman just in time to save Ayunosuke from falling. After restoring her health, Jiyu blows the whistle, which summons Ayunosuke, and asks him about the Eyepatch. Ayunosuke explains everything, and though Jiyu is moved with tears, she refuses to accept the Eyepatch, swearing that she will never become Yagyu Jubei again. (Source: Wikipedia)