|Appears in:||Fate/Grand Order|
The swordsman's name is unknown, but he tells Musashi he is a figurehead of the Edo Yagyu.
During Musashi's travels through alternate worlds, she fights the swordsman briefly before deciding to run away. As she enters through the portal to the next world, he lands a strike that hits her head, knocks her out, and causes her brief amnesia in the next world. After she disappears, he says he will remember her name.
Although able to withstand his sword strikes, Musashi says the swordsman far surpasses her and runs away from the battle.