Its Name is Enma! Oden's Great Swords!

Zoro runs after the warrior-monk who took his Shusui and Kawamatsu shares with Hiyori his memory of a fox that was guarding the graves in Ringo. As they catch up to Zoro, they find a room filled with swords. And Hiyori tells Zoro to give Shusui back to the Land of Wano.