Tanjiro Kamado and Giyu Tomioka vs Akaza

Tanjiro Kamado and Giyu Tomioka vs Akaza was a battle that took Place in the Dimensional Infinity fortress. It focuses on the battle between Tanjiro Kamado along with the water pillar, Giyu Tomioka against Upper Demon Moon Rank 3, Akaza, the man who killed the fire pillar, Kyojuro Rengoku.

Prelude
Tanjiro and Giyu are running in the fortress, trying to find Muzan and Tamayo. They have just heard about the death of Shinobu Kocho at the hands of the upper demon moon rank 2, Douma. But suddenly, a tremor appears shaking both the demon slayers. Tanjiro recognised a familiar smell, as the roof above them broke, revealing Akaza,upper demon moon rank 3. Akaza is surprised that a 'weakling' like Tanjiro is still alive and shouts his name, with Tanjiro screaming his name in return. Thus begins the fight between the 3, a way for Tanjiro to avenge the death of the fire pillar, Rengoku Kyojuro,a man Tanjiro admired a lot, who died at the hands of the demon.

Improved Performance
As Akaza advances, tanjiro dodges his punch and uses Dance of the Fire God : Fire Chariot on Akaza, and with considerable effort, severs the demon's arm.As Tanjiro attempts to recover, Akaza attempts to behead Tanjiro with a back-fist punch which Tanjiro dodges and counters with Dance of the Fire God : Parhelion Rainbow managing to create a long cut on Akaza's face.Looking at this fight, Giyu is quite amazed and surprised by Tanjiro's sudden and quick improvement, comparing that of a pillar. Akaza remembers Kyojuro's words about Tanjiro not being weak and accepts it as a fact and decides to show respect to him by activating his Technique Deployment indicating that the real battle has just begun.

Water and Fire
Giyu enters the fight, immediately using Breath of Water -Third Form : Dance of the Swift Current, Akaza is instantly impressed as it has been 50 years since he ran into someone this good and used Destructive Kill : War Style, a flurry of punches that produced giant shockwaves. In order to negate these shockwaves, Giyu used his own creation, Breath of Water -Eleventh Form : Lull, Akaza remarked that he had never seen it used by the previous water pillars he last fought. While Tanjiro tried attacked from behind using Dance of the Fire God: Scorching Crimson Mirror . Akaza appeared from behind and attempted a backhand chop, while Tanjiro was trying to use his technique, when Giyu cut the attacking hand with Breath of Water -Second Form : Water Wheel As Giyu was attacking the demon, tanjiro tried to trip him by trying to use Dance of the Fire God : Flame Waltz on his legs, but was stopped and countered by Destructive Kill - Leg Form : Cap Tip Slice. Even though Tanjiro blocked it, he still spat blood. Akaza, while battling Giyu, got impressed by the pillar's swordsmanship and asked his name. Giyu refused and Akaza told that he would ask again and again and kicked him with his Destructive Kill - Leg Form : Flowing Light Flash which launched him to another side of the fortress, through various walls.

The Strong Should Aid and Protect the weak
Akaza managed to know the water pillar's name due to Tanjiro shouting his name and both attacked each other with Tanjiro using Dance of the Fire God : Bone Burning Sun and Akaza using Destructive Kill Dual Layered Demon Wick. Akaza praises Tanjiro's improvement and claims that Kyojuro did an amazing job and was glad that he died, enraging Tanjiro. Akaza then gave his philosophy of how he hates the weak and wish they got eliminated. Tanjiro retorted by saying that even Akaza was once a child and someone helped him and told that the Strong should aid and protect the weak and won't let Akaza do as he like any further.

Flickering Memories
Tanjiro's words shook Akaza as he feels restless and the memories of Keizo appear telling him the same things Tanjiro told him about becoming stronger and helping people. But Akaza brushed it off and realized it was but a hallucination. Angered, he claimed Tanjiro to be unpleasant and used Destructive Kill - Crush Style : Willow of a thousand flashes and became much more faster with Tanjiro attempting to dodge