Its Name is Enma! Oden's Great Swords!

Kawamatsu rekindles his bond with Hiyori whilst Zoro chases after Gyukimaru. Kawamatsu explains that in Ringo, people are given a sword at birth which they keep for their entire life. When they die their swords are used as grave markers for their Eternal Graves. He also tells her that thirteen years ago, after she ran away, he spent some time robbing and storing swords from the Eternal Graves in Ringo after befriending Onimaru, a komagitsunea (a fox with flame-like mane and tail) who was once the companion of Shimotsuki Ushimaru, the late damiyo of Ringo. During his time guarding the graves he came up with the alias, "Gyukimaru". This went on until he was captured trying to steal food and was sent to Udon. Hiyori feels it isn't a coincidence that a man named Gyukimaru is doing the exact same thing Kawamatsu did. Kawamatsu contacts Kin'emon to reveal that he can supply the alliance with the stored weapons. Meanwhile, Gyukimaru reveals himself to be Onimaru in a human form. Hiyori then offers to trade Zoro's Shushui with Emna, a sword that belonged to Kozuki Oden and the only blade that injured Kaido.