Pinkamena watched Doma for a time, all while the Upper Moon coughed and Shinobu waited for him to die, though what was amusing was that the Demon moaned and coughed up blood, revealing that it was stronger than what she had used against one of the other enemies she had slain in the past. It confirmed that information was shared between Demons, at a slow rate given how the Kizuki had been surprised by her transformation into her Kitsune Form, though it also caused the Insect Hashira to pause, as there was a chance that her poison might not work. Of course she had been working with Tamayo for some time before this point, so there was a chance that her poison could cripple Doma and open the way for someone else to remove his head, which Pinkamena would do if no one else showed up. She also had to admit that the Demon was vomiting a decent amount of blood, which she silently claimed as he did that, sending it through a cleansing area to remove the bits of Human she spotted from where she was leaning.
In the end, however, Doma was able to decompose the poison, even though his left eye was dark red from the poison and the purple skin was starting to recede, where he laughed it off as he made sure there were no more side effects from what he was feeling at the moment.
"You know, your sword makes a unique sound when it is sheathed," Doma commented, as after the first strike Shinobu had returned her blade to her scabbard, allowing Pinkamena to determine how she crafted and applied her poison while she was out in the wilderness, "that's how you mix the poison and change the mix, right? Oh man, this is going to be fun. I've never fought a poison user like yourself, so who knows, I might actually like fighting against your poisons. Tell me, do you think your next poison will work against me?"
"Who knows... either way, I was expecting this to happen." Shinobu replied, because her target was Upper Moon Two, as in one of the strongest Demons that served under Muzan, so there was no telling whether or not her poison was going to even affect her foe, before she assumed her battle stance once more and got ready to attack.
Pinkamena observed as the pair went at it for a few minutes, neither saying anything as Shinobu moved with the speed to match the upper three Upper Moons, allowing her to keep up with Doma as she avoided, to the best of her ability, most of his ice techniques and his fans. Of course she also picked her openings with care, either stabbing him the brain, the chest, or any other vital organ that would quickly spread her poison throughout his body and cripple Doma, who simply took all of her attacks, showing Pinkamena that he was having fun with this. It gave her a chance to see the other three Forms of Insect Breathing, the First Form being Butterfly Dance: Caprice, an attack that allowed the user to 'sting' their foe multiple times in an instant and deliver a shocking dose of poison to Doma. After trying that out, and her foe adjusted to that level of poison, Shinobu went with the Third Form, Dance of the Dragonfly: Compound Eye Hexagon, six powerful thrusts that were aimed at the foe's weak spots and was designed to use an even stronger poison than before. As Doma adjusted to that, even quicker than before, Shinobu used her final technique, the Fourth Form, Dance of the Centipede: Hundred-Legged Zigzag, a rapid movement that shook the ground a little as her speed exceeded what she used in the past, all to stab Doma in the neck with new poison.
That didn't last very long and the fifth poison, delivered to his heart while stabbing through his hand, didn't do much for her either, in fact Pinkamena was sure that the Hashira was slowing down due to the ice in the air, which explained how he was able to kill so many Slayers over the years, by crippling their lungs.
"I know I was excited to face your poison, but that was pretty pathetic." Doma commented, watching the marking on his hand disappear in no time, as his resistance to Shinobu's poison was getting far better as time went on, where Pinkamena had to wonder if he and Muzan were sharing information about the poisons they were feeling, "I mean, its only the fifth one I've felt, but even I can tell that your attempts are getting less and less effective as time goes on... and I can see that, despite the power behind your attacks, that you're having trouble breathing."
Part of the problem was that Doma's Blood Demon Art allowed him to slowly freeze his foe's blood and, when they were struck by his fans in some manner, turn it to mist, so not only was the cold air crippling Shinobu, making her easier to kill once he was done having his fun, his ability was targeting other parts of her body as well. Of course Shinobu knew that, in fact she had figured it out and went with it, since the more information they had on their foe the more openings someone else could exploit once they reached this garden area, and she fought to keep his attention on her. Pinkamena found that the Hashira continued to use her Forms, picking and choosing when to attack and when to move, making her wonder if Shinobu was going to reject the offer she had given her earlier, before Muzan pulled them into his dimensional fortress so the Upper Moons could kill them. It eventually got to the point where Doma, growing bored of her hits, cut Shinobu when she unleashed another Form on him, striking her left lung and her left shoulder in that instant, causing the Hashira to fall to her knees and make her vision hazy, likely forcing her to see something that only she could see, which might kick her in the rear and get her to defeat Doma.
Doma went on to talk about her size and how sorry he was for making her suffer, which was the best opportunity Shinobu could ask for as she carefully raised her head and nodded to Pinkamena, who weaved her power over her and mended her body back to what it was like at the start of this fight. Doma, of course, was under the impression that everything was the same and that Shinobu had to be on death's door, as he cut through her collarbone, lung, and ribs, she found that out as she mended the Hashira's body, so he wasn't expecting what was coming his way. In that instant, once the procedure was done, Shinobu stood and shocked Doma, as he clearly thought she'd either be dead or laying on the wooden bridge she had landed on, which was when she called forth all of her power, as she had been restored by Pinkamena's ability to alter reality, and launched her attack. It was another usage of the Hundred-Legged Zigzag, where this time her speed just broke everything in her path as she attacked the Upper Moon, as she had mixed what should be a killer poison this time while her opponent was distracted, and as Doma lashed out Shinobu ducked down, avoiding the incoming attack, before trusting upward and pushed her foe into the air with her might.
It was a beautiful attack, even a desperate one in some sense, as she smashed him into the ceiling and pierced Doma's neck again, though, like before, he adapted to her even stronger poison with rather shocking speed, to the point where he pushed her back and reached out to grasp her, which was when Pinkamena pulled the wool over his eyes and made him believe he had grabbed Shinobu when, in reality, he was holding an orb of poison.
"I am moved by your dedication. You might not have your sister's talent, but it is wonderful to see that you survived for so long and did so much." Doma stated, where tears graced his eyes for a moment as he absorbed 'Shinobu', who was now in Pinkamena's clone's shadow, hidden from his sight, where the potent Wisteria poison, an entire years worth that Shinobu had taken and distilled so that her entire body contained it, meaning it should have a massive effect on Doma once his body fully absorbed it.
As that happened Kanao came in and, as was planned by her and Shinobu, attacked Doma to push him back, though as she landed Pinkamena shared her sight with her, allowing the young girl to see that her mentor was alive and that they had started the other plan they had talked about... but as Inosuke came this way Pinkamena turned her attention over to the clone following Akaza, just in time to see Tanjiro dodge an attack and hack off most of his left arm.
"Impressive." Pinkamena commented, as the clone was watching from Giyu's position, though she had seen Tanjiro use the Tenth Form of Sun Breathing, Fire Wheel, and as Akaza swung at him again Tanjiro utilized the Eleventh Form, Fake Rainbow, to confuse his opponent and disappeared as he slashed through his foe's head, even though it quickly healed in a few seconds.
"What was it he said? 'This boy isn't weak, don't insult him'? I can now accept that Kyojuro was right." Akaza said, because he once assumed that Tanjiro was one of the weaklings that he despised, something Pinkamena got from how he acted, though as he talked she also grabbed the fallen pieces of his body, adding to her collection, "Tanjiro Kamado, you aren't the weakling I once thought you were... I shall show you my respect, by facing you with my full power."
In that moment Akaza shifted his stance and summoned his compass beneath his feet, showing them that he was ready to do battle with Tanjiro and Giyu, even though he likely had no idea who the Hashira was since this was his first time even meeting the figure. In the following moments Giyu attacked Akaza and quickly used the Third Form of Water Breathing, Flowing Dance, something that surprised Upper Moon Three for a moment as he claimed that it had been about fifty or so years since he last fought a decent Water Hashira. Sure enough it wasn't long before Akaze shifted into one of his rather powerful techniques, his Disorder attack, which was a wall of shockwaves created by him rapidly punching the air in front of him, different from the Air Type, a shockwave that was produced from whatever range he wanted by hitting the empty air, and his Annihilation Type, the massive twin shockwave attack that broke Kyojuro's final attack. Giyu, however, used a move that Pinkamena had only heard of when she talked with Sakonji again, the so called Eleventh Form of his Style, Dead Calm, a move that seemed to be a perfect shield, to some degree, that was him instantly shattering a foe's attack with a single swing of his sword, even if it looked like he didn't move his body at all.
Even Akaza was surprised, as this was a Form none of the other Water Hashira used, and the attack opened the way for Tanjiro to unleash the Third Form of Sun Breathing, Raging Sun, allowing him to utilize two horizontal slashes to try and take his foe's head. Sadly the attack ended up missing as Akaza sensed where he was coming from and opened him up to another attack, though before he was hit, and either slain or knocked into a wall, Giyu came to his rescue with the Second Form of Water Breathing, Water Wheel, allowing him to cut through the Demon's arm. As Akaza moved to attack Giyu they found that even with his back turned to Tanjiro he knew where his other foe was coming from and kicked him into the air with one of his legs, an attack that was joined by a shockwave that dealt a bit of damage to Tanjiro since he coughed up a bit of blood. Akaza also wanted to know Giyu's name, as he was strong and seemed to like collecting the names of those he deemed to be powerful, and when the Hashira refused to give it the Demon punched him into a wall and got it out of Tanjiro, who called out to Giyu before having to defend himself with Burning Bones, Summer Sun, the Fourth Form of Sun Breathing, as the Demon attacked him once more.
Sure enough Akaza was elated by this turn of events, in fact he praised Kyojuro for doing a good job of motivating Tanjiro before his death, even though he was glad that he died that night, especially given his 'dumb' worldview of wanting to stay Human, which just set Tanjiro off. Akaza was of the opinion that all weaklings were to be eliminated, as they made him sick and he couldn't stomach their existence, even though Tanjiro informed him that he was wrong and that everything he had said was entirely incorrect, since babies were weak and the strong had to keep them safe. Pinkamena, to be honest, just tuned out the conversation as she observed the pair, finding that Akaza was annoyed with Tanjiro and actually swung at the air behind him, as if recalling a memory of his time as a Human, before declaring that he realized just how unpleasant Tanjiro really was, to him at least. In the following moments Upper Moon Three went on a rampage, unleashing a couple of his moves as he focused on crushing Tanjiro, the shockwaves disrupting everything around him as he tried to crush his opponent into the ground, to the point where her friend had to utilize the Sixth Form of Sun Breathing, Solar Heat Haze, to attack his foe.
Akaza dodged the attack for the most part, as part of his neck was cut, though he laughed and claimed that the move was another fun one for him to experience, even though Muzan's cells should have freaked out after seeing multiple Forms of Sun Breathing, as the hazy nature of the sword swing interested him. As the battle raged, however, Pinkamena found that Tanjiro's crow was nearby and recalled that all sorts of crows were in the dimensional fortress, likely showing Kagaya's remaining children, the new leaders of the Slayer Corps, everything that was going on, so she extended her barrier for a few seconds and brought him close to her. She also found that he bared a letter for Tanjiro and she collected it, mostly to keep it safe, even though her curiosity got the better of her and she found that it was a meeting between Yoriichi and the Flame Hashira, going into how he defeated Muzan, or nearly killed him as people chose to remember that event, and that it detailed a 'Thirteenth' Form. Pinkamena chuckled as she folded up the letter and returned it to the crow's leg for now, as she had access to all of Tanjiro's memories, even the inherited ones, though she had a feeling she knew what Senjiro was talking about, as she had learned something while watching the Forms in action and realized that she might have figured out the nature of the mysterious Thirteenth Form.
The battle reached a pause as Akaza grabbed onto Tanjiro's blade, like he was going to snap it as he ignored a headbutt and a kick, though it was Giyu attacking him again, removing his hands to free Tanjiro, that saved the day, though as he revealed that he was annoyed Pinkamena found a watery Slayer Mark on his face.
In the following moment Giyu attacked Akaza with greater speed and power than before, both a mix of the Mark and what Pinkamena assumed were his own sealed abilities, as now he was fighting like an Hashira should, and he clashed with the Demon they were fighting, cutting his neck a few times as they fought. For a second it looked like he would overwhelm his foe and carry Tanjiro to victory, though the reality was that Akaza was fast at adapting to his foe's movements and quickly matched Giyu's boosted power and speed. As Tanjiro considered how he could help Giyu, and delved into his memories for the solution, Pinkamena thought back to some of her own training with Yoriichi, or mimicking his movements, where she thought about his calm nature and found that, without realizing it, that she had become more like him. To master his Breathing Style she had either sealed most of her emotions or simply sacrificed them, such as her anger, to make herself stronger, given that her own Sun Breathing was a copy of Yoriichi's now, before she focused for a moment and found that she could, if she erased her presence from the battlefield and focused her mind, she could see a Transparent World, one unlike anything she had seen so far.
At the same time Tanjiro attacked Akaza, who caught his blow from behind and swung to kill him, causing her friend to actually move his body and avoid the attack with a single light cut to his stomach area, allowing her to understand more of what she was seeing, as she could see everyone's blood vessels, bones, and muscles like they were transparent, hence her naming scheme for the technique. It was a fascinating technique and wondered how Yoriichi had awakened it, though as she thought about it, and the figure in question, it was possible he had been born with it, and a Slayer Mark, which had to be why he was so unsurpassed during the time he was alive. Surprisingly enough it seemed like Akaza was focused on his fight with Giyu and wasn't worrying about Tanjiro at all, though things changed in an instant as Upper Moon Three swung his right hand at an incoming attack and snapped Giyu's blade in half, confirming that the attacks of a Demon like him were far stronger than their blacksmithing techniques. In the following second Tanjiro, tapping into the Transparent World at last, moved forward and sliced off half of Akaza's right hand, taking his fist before he was able to punch and kill Giyu in the same way he killed Kyojuro, something that caused the Upper Moon to realize that a threat had appeared and quickly loosed his technique as he unleashed a barrage of countless thin shockwaves in this area.
As Pinkamena claimed the fallen part of Akaza she found that even Giyu's Dead Calm was unable to withstand the amount of attacks and it forced him to the ground, though Tanjiro had avoided everything and ruined the element of surprise by shouting at Akaza... though when his foe readied himself he found that he was unable to track Tanjiro and Pinkamena just watched as her friend unleashed the Fifth Form of Sun Breathing, Setting Sun Transformation, severing Akaza's head from his body.
"It's over." Pinkamena commented, though what was amusing was that Akaza didn't seem to agree with her and grabbed onto his head, to try and reattach it with his sheer force of will, leading to Giyu throwing his blade at his head, sending it flying into another part of the room they were in, causing her to form a barrier around the fallen Demon, "This should let him cool down... and I'll heal you two as well."
While she did that Pinkamena, Giyu, and Tanjiro watched as Akaza tried to nullify one of his weaknesses, as in losing his head like this, and he lashed out at the barrier with his powers, though something stopped him after a few moments, as if someone from his past was talking to him. What was amazing was that it seemed to be working, as if Akaza had heard her comment and was trying to make this fight last longer so he could kill Tanjiro and Giyu, but something in his past kept him rooted, even though his head was starting to reform. Tanjiro, on the other hand, seemed to consider something and asked if she'd open the barrier for a moment, where Pinkamena did so and found that her friend, unable to grip his sword after his brief delve into the Transparent World, punched Akaza in his right cheek. In that moment, as if the punch had triggered something, Akaza smiled as he delivered a powerful shockwave punch to his own head, where his iron will crumpled right in front of them as Pinkamena felt Upper Moon Three expire, causing her to collect his fallen body like she did to every Demon who died near her.
Once that was done, and she was sure this battle was over, Pinkamena left her clone near Tanjiro and Giyu, allowing them to rest and heal before worrying about what the future held for them, before switching back to the clone near Doma, only to find Kanao tormenting Upper Moon Two with her words, despite her injuries. Apparently he felt Akaza's death and was shocked by it, in fact he even cried over his friend's passing and stopped his assault to mourn him, meaning that, while he might be mentally unstable in his viewpoint, he might be the most Human Demon of them all. Kanao, however, didn't care all that much about his feelings, showing them that her hatred for Doma was far stronger than his sadness and grief over losing one of his friends, making Pinkamena wonder how he reacted to losing Gyokko and Hantengu. Before anyone really did anything Inosuke joined the battle and joined the assault on Upper Moon Two, though both Pinkamena and Shinobu were still surprised by the intense hatred that lingered in Kanao's heart, even if she knew that her mentor was alive thanks to Pinkamena's powers.
It was surprising to see the loathing and disgust that rested inside the young girl, as until this point she had been mostly emotionless and only opened up thanks to Tanjiro, so this was quite the surprise to her and Shinobu, but what was even more surprising was Inosuke's new technique, that being the Ninth Fang of Beast Breathing, Extending Bendy Stretch, as he dislocated every joint in his right arm to slash Doma's eyes.
"That's one messed up technique." Doma remarked, where he had been expecting the attack to miss, since he had been out of range when Inosuke swung at him, only to be surprised by his new foe's power and skill, especially since Kanao was stronger than Shinobu and the newcomer was on the same level.
"I can agree with that." Pinkamena said, where Shinobu nodded her head, even though all Doma could see was her right now, as they wanted to keep the Hashira's survival a secret from him for some time, but the Upper Moon turned towards his foes once more as he considered what was going on right now.
As Doma removed Inosuke's mask, a fact that irritated him to no end, the Upper Moon realized that he had seen him from someplace and, while her friend denied such a thing, stabbed a finger into his brain to stir his memories, confirming that he was the oddest Upper Moon of them all. Despite their feelings on the matter it seemed to work, Doma recalled meeting a woman about fifteen years ago who was carrying a baby, where her husband beat her and her mother-in-law bullied her all the time, leading to his cult taking her in, a lady who had the same face that Inosuke had. It explained so much, as in why Inosuke thought he had no mother, because he had sealed his memories of those early years away and became who they were used to dealing with, and the clue that brought everything to the surface was a pinky promise song that Doma recalled Inosuke's mother singing all the time. Sure enough Doma had tracked down and killed Inosuke's mother when she tried to flee from his cult, leading to Inosuke landing in the situation that lead to him being raised by boars, and this just awakened a new rage inside him, as he had one more reason to kill Doma.
Sadly, with Akaza passing, Doma informed them that he didn't have the time to waste on them and started creating dolls made of ice to fight the pair as he continued to spread his ice, intending on slowing them down to the point where he'd be able to learn all of their moves and then kill them in seconds... but as he started to retreat, however, Shinobu's poison acted up at long last, burning his insides as one of his eyes fell out of its socket.
"I see the poison is finally working." Shinobu remarked, where she emerged from her hiding place and joined the pair, all while Doma's ice dolls shattered in an instant, while the Upper Moon glanced over to where she and Pinkamena were at the moment, allowing Inosuke and Kanao to regroup with them, "I see you're confused. In preparation for our fight with you, just in case we ever crossed paths, I ingested a high concentration of Wisteria poison and pushed myself so that every part of me, from my fingertips to my organs, were tainted with the potent poison... which you absorbed not that long ago, after 'absorbing' me, and I can tell you that this poison is seventy times the lethal limit."
"You... how did you... Pinkamena!" Doma said, as at first he seemed confused as to how Shinobu survived, but recalled the figure who had been watching them, untouched by his Blood Demon Art, the entire time and understood what had just gone down, but while he had no idea what he had absorbed he had a feeling that it was something that mimicked his old target in some manner.
"That's right. Finally, at least someone understands when I'm using my power." Pinkamena stated, as most of their foes didn't notice her alterations until it was far too late for them, but Doma knew she had pulled the wool over his eyes, not that it mattered since his bones were melting and his flesh seemed to be burning, though he still had the strength to call forth a massive ice statue.
As impressive as the ice Buddha statue was, because it was to some degree, Pinkamena could see that Tamayo's side of Shinobu's poison was working as well, crippling Doma's power to the point where there were cracks in the ice and part of it didn't look well at all. In the following moment Shinobu rushed forward and dodged the statue's attacks, allowing her to get close to Doma and slice off both of his hands, as his regeneration was greatly crippled in this state, opening the way for Kanao and Inosuke to launch their portion of the assault. With both the Upper Moon and his statue stalled by the vast poison in his body it was easy for Kanao to get close and slash at Doma's neck, which was still thick despite the poison he was feeling, to which Inosuke, true to form, did something reckless by hurling his blades through the air. Both blades just flew through the air and locked onto Kanao's with ease, allowing his swords to push hers further than before and quickly removed Doma's head, eliminating Upper Moon Two as well.
Pinkamena smiled as the statue shattered and Shinobu rejoined Kanao as Inosuke collected his mask, where she took the time to collect Doma's body and purify it of the poison that was inside it, allowing her to add every bit of Upper Moon Two to her Storehouse, before she set up a barrier around them.
"This will heal and keep you safe, so you can rest after the battle you've just been through." Pinkamena said, though at the same time Shinobu knew that she was just a clone, as she suspected that the real one would have fought back and not just stand on the sidelines, before she turned her head for a moment, "I must shift my focus for a time, as someone is approaching the area that Upper Moon One is currently resting in."
Pinkamena had no idea what would happen when Muichiro reached the area that Kokushibo was resting in, other than a fight given what she had witnessed so far, but she wanted to be there to see what might happen next, given that he was the strongest Upper Moon and wanted to be sure he was defeated before even fighting Muzan.