After being recovered from the battle with Mongols, Jin Sakai pushes toward Castle Kaneda to save his uncle, by challenging Khotun Khan on the bridge.
Flashback: Jin Sakai's father, Lord Kazumasa Sakai, is killed in a raider ambush while pacifying Iki Island. At Kazumasa's funeral, Lord Shimura gave Jin his father's blade, the Sakai Katana.