Mitsuri Kanroji and Obanai Iguro vs Nakime is a battle that takes place in the Infinity Castle between the Love Hashira Mitsuri Kanroji and Serpent Hashira Obanai Iguro against Upper Rank Four Nakime. During the end of the fight, Yushiro joins in the fight to aid the two Hashira.
Prologue[]
Mitsuri and Obanai find Nakime.
While Mitsuri and Obanai wander through the Infinity Castle, the Love Hashira notices a female demon wielding a biwa with a large bachi pick. They both see the kanji for Four (
Battle[]
Cat and Mouse Game[]
Mitsuri evades Nakime's attack as a platform moves toward Obanai's direction.
Mitsuri immediately engages the Upper Rank and tries to behead her, but Nakime evades the attack with her Blood Demon Art, warping a wooden door between them. As Mitsuri's sword makes contact, Nakime manipulates the door to push her off the edge. As Mitsuri falls, she nosebleeds from embarrassment and the backfire of her arrogance. Obanai grabs hold of Mitsuri and brings her to safety on a nearby wooden column. Obanai advises Mitsuri that since they have no idea how the Upper Rank's Blood Demon Art functions or if she has any other abilities, they should analyze her capabilities and proceed calmly, to which she acknowledges.
The "floor" they are standing on suddenly opens to separate the two Hashira. They both grab the door frame and leap off as more doors open to separate them again. The adjacent columns now move in order to crush the two; as Obanai dodges the columns, Mitsuri, distracted for his safety, is caught by one, which rapidly ascends towards a ceiling. Fortunately, she is able to save herself by slashing open the column, which gives her the opportunity to dodge the crush.
Mitsuri jumps off the column and lunges at the demon, telling Nakime to prepare herself, as she knows that she won't be able to hit her with the same exact attack twice. She leaps over the wooden door that pushed her off before and sees an opening for her to use another Love Breathing form in order to kill the Upper Rank. However, Nakime simply warps the same door for Mitsuri to fall into, which warps her off the column and causes her fall into an even more treacherous depth. Mitsuri pouts at herself for being deceived by the same move.
Obanai nearly decapitating Nakime with Serpent Breathing, Second Form.
Obanai attempts to behead Nakime with his Serpent Breathing, Second Form: Venom Fangs of the Narrow Head, but the enormous wooden column that she has merged with quickly ascends and throws Obanai completely off of it. He remarks that while Nakime's Blood Demon Art isn't exactly deadly like her fellow Upper Ranks, but it is far more frustrating to fight against, which makes him fear that their fight will be a very long and troublesome one.
Mitsuri and Obanai find themselves unable to rejoin with the other Demon Slayers.
Yushiro Intervenes[]
His worry ends up realized, as shortly after the defeat of Upper Rank One, the two Hashira hear a Kasugai Crow announce that Muzan has returned from his hiding and order that the Hashira assemble at once. Mitsuri is shocked that Muzan has managed to emerge while they were being stalled, while Obanai is ashamed that while Muichiro Tokito and Genya Shinazugawa gave their lives to defeat Upper Rank One, he was wasting time. He decides that since Nakime is forcibly dragging out the fight, he and Mitsuri must find away to get away from the Biwa Demon's battle.
Mitsuri is confused by the plan when a hand suddenly grabs her by the haori. Revealed to be Yushiro, he tells her that although he is a demon, he is an ally, telling her listen to him if she can. Slightly insulted by his bluntness, Mitsuri complies; she will run around as a decoy, allowing him to sneak up on Nakime and hijack both her brain and her sight. The plan is successful, with Yushiro covering Nakime's eye with a paper talisman and drilling his fingers into Nakime's skull; as Muzan faces off against Tanjiro Kamado and Giyu Tomioka, he creates a false vision of Obanai and Mitsuri being crushed by the pillars, which the Demon King believes.
Obanai rejoins the battle and saves Tanjiro.
Before long, the Serpent and Love Hashira make their way to fight Muzan with Giyu and Tanjiro, with both parties expressing shock that they faked their deaths. Muzan demands to know Nakime's status when he hears Yushiro furiously announce that as penance for killing Tamayo, he was going to shift the rooms in the Infinity Castle outside in order for Muzan to soon be exposed to the sunlight. The two demons battle for control over Nakime's abilities, causing mass chaos and tremors. However, struggling to both battle the Demon Slayers and Yushiro, Muzan decides to focus on the former and executes Nakime by destroying her cells.
Aftermath[]
Although shocked at Muzan's decision, Yushiro takes control of Nakime's disintegrating corpse for enough time to shift the rooms of the collapsing Infinity Castle outside, successfully making the destroyed fortress erupt in a city, bringing the fight to the outside world. Nakime's death not only brought the termination of the Twelve Kizuki, but forced Muzan to fight in an environment where he was vulnerable to sunlight, a fact he was furious about, daring the Demon Slayers to kill him.