Rokujushi Miyo/Synopsis

History
Miyo was a sumo enthusiast who is incarnated by Kenjaku in the present day to participate in the Culling Game.

Culling Game Arc
On November 2nd, 2018, Miyo challenges several people in the city of Miyazaki to a sumo bout. However, all the people he challenges refuse to entertain him. When he is disheartened, he hears someone shouting "Nokotta" in the distance and rushes towards the source of the sound, which is an old woman's house that he breaks through the window to enter. Seeing the sumo wrestlers on the television, he asks the old woman where they are, to which she answers Ryogoku, Tokyo. Later, after preparing his essentials, Miyo embarks for Tokyo. Believing that he simply needs to walk right to arrive at Tokyo since it translates to "the capital in the East", Miyo travels right, not knowing that he is instead walking south.

On November 14, Miyo and Hagane simultaneously interrupt the fight between Maki Zenin, Noritoshi Kamo and the cursed spirit that was Naoya Zenin. Seeing that Maki is confused over why Daido is able to seriously damage Naoya but she isn't, Miyo creates a Simple Domain and invites Maki to a sumo bout by saying "hakkeyoi!".

Believing that Maki is too tense and thus weakening herself, Miyo invites Maki to a sumo bout within the simple domain. The simple domain can only be completed if Maki agrees to the match, thus bypassing any need for binding vows. Maki accepts and enters the domain, exciting Miyo. After the domain's barrier encloses the two fighters, their sumo match begins. Maki rushes toward Miyo, but is outmaneuvered and thrown aside by the skilled wrestler. Miyo expresses his love for sumo and admits Maki could easily defeat him in a head-on fight. He wants to know why she isn't at her best and asks why she can't focus. Maki tells Miyo that she can't understand what Daido meant about seeing everything. Miyo, who is able to understand Daido's words, invites her to continue playing sumo with him since he can only explain it to her through sumo.

As they engage in sumo bouts, Miyo explains to Maki that she's been entangled and caught up with everyone and everything around her. Even though sumo wrestling is about grappling and getting entangled with an opponent, the wrestlers have to develop outside the ring before they enter the bout. Every experience leading up to the moment of entering the ring of a wrestling match flows naturally into the combatants. Miyo compares the sensation they feel to smelling light or seeing sound. This sensation is the ability to sense everything around you and your opponent. At that moment, everything including the competition falls away and becomes meaningless in the grand scheme of expressing oneself. Miyo reveals that the sensation Daido was describing is true freedom and now Maki must experience it for herself through sumo wrestling.

After over a thousand bouts of sumo, the domain dissipates and Maki rejoins the fray with a smile on her face, proudly proclaiming that she's at her best. As it turns out, due to Miyo's barrier removing any binding vow, time flows faster within the domain, allowing the two to engage in so many sumo bouts when less than one minute's worth of time has passed outside of the simple domain. Naoya then flies away to gain speed for another attack. As Miyo and Daido ready themselves for a fight, Noritoshi asks for their identities. They claim they're individuals who do as they want and their identities are of little importance. They then realize that Maki got ahead of them to pursue Noaya.

After Maki punches Naoya to the ground, Miyo headbutts the cursed spirit. Daido then seizes the opportunity to slash Naoya in half, with Maki kicking his top half away before he can heal himself together. Miyo, along with Maki and Daido then witness as Naoya's human form climbs out of the cursed spirit's lower half and casts Domain Expansion.

Trapped inside Naoya's Time Cell Moon Palace, Daido and Miyo are hit by film strips, but otherwise suffer no effects. Assuming the domain's effect misfired, the two fighters rush towards Naoya. Lacerations suddenly appear on their body that bleed profusely, forcing them to stop in their tracks. It is revealed that Naoya's Domain Expansion allows him to target individual cells with Projection Sorcery's 24 FPS rule, thus disrupting them when a target moves within his domain and dealing damage. Miyo subsequently collapses from the damage he suffers. Daido pretends to desperately swing his sword at Naoya, only for his hand to be cut off as it flies over Naoya's head with the blade. In fact, he was throwing the Split Soul Katana to Maki, who was behind Naoya and is unaffected by the domain's effects due to her Heavenly Restriction. Maki then singlehandedly exorcises Naoya, freeing the three from the domain, albeit leaving Miyo and Daido severely wounded.