All the demons dispatched were wiped out by the Demon Slayer Corps in one go, depleting all the forces Kibutsuji had gathered during this period of time.
Now, inside the Infinity Castle, there was no one left except Muzan and Nakime. Upon witnessing this scene, Asahi didn't think too much and directly opened the gateway to the Infinity Castle.
It was time to deal with Muzan, as this guy had lived for far too long.
However, Muzan was undoubtedly formidable, as he has five brains and seven hearts in his body. Without the Transparent World, there was really no way to deal with him.
It can be said that Yoriichi is really overpowered. Although Muzan had escaped, the injuries he had sustained from him remained.
Even after being weakened by the drug, the injuries Demon Slayer Corps done to Muzan is not as great as Yoriichi. The fact that Yoriichi could still make Muzan severely injured hundreds of years later is indeed astonishing.
"For the final battle, you know who your opponent is, right? I've already opened the gateway to the Muzan's main base, the Infinity Castle. What happens next is up to you. Whether you can bring back your loved ones depends on this moment!"
After Asahi opened the spatial gateway, everyone's spirits were invigorated, as Muzan is right in front of them now.
Including Kagaya, everyone was highly excited. This time, they were determined to defeat Muzan. And without hesitation, they swiftly entered the gateway and set out to find Muzan.
As for Asahi, he didn't join them. Instead, he went to find two other individuals: Tamayo and Yushiro.
Tamayo is undoubtedly an excellent doctor. The drug she created played a crucial role in driving Muzan to the brink in the original work. Although Muzan ultimately escaped into Tanjiro's body, her drug is undeniably invaluable.
Since Tamayo could create such thing with limited support, who knows what groundbreaking advancements she might make if she had technological support.
So Asahi found Tamayo and intended to add a new member to Orochimaru's scientific team. Even though he didn't personally make much use of these scientific teams, others could benefit from them.
Now, after the fusion of several worlds, technological advancements were progressing rapidly, and even Orochimaru's team has started building spaceships.
Although it sounds incredible, the speed of climbing technology will increase indefinitely in Dangai. This allowed Orochimaru and his team to save a significant amount of time and make substantial progress in technology. They even integrated other magical and energy sources to create new weapons, including the remarkable magical energy robots based on Vegapunk's Pacifista.
This kind of robot can accommodate a large amount of magic power and energy, and has a large number of magic runes on its body, which can exert a strong power.
The mass-produced magical energy robots already possess combat capabilities at the level of the Ten Wizard Saint from the Fairy Tail World, which is incredibly powerful. In the Naruto World, they can be considered on par with Kage-level beings, and they are continually being improved.
Just like Asahi is constantly improving the Energy Source, Orochimaru and his team is also continually working on upgrades.
And this is only the mechanical aspect.
Orochimaru and his team is also exploring advanced bioengineering. Although Asahi's White Zetsu army is still the strongest, often referred to as the God's Army, however, Orochimaru and his team has concocted a rather bizarre combination of the Rinnegan and the Edo Tensei, creating the 'RinneTensei Corps', which is truly formidable.
In short, the combined strength of several worlds is more than capable of easily sweeping away the worlds they were previously a part of. They don't even need to exert much effort, as just dispatching a few minor underlings can clear out an entire world with ease.
At this moment, Tamayo, who is still researching the drug, and Yushiro, who is staring at Tamayo, didn't realize that there was an extra figure behind them.
"Cough!"
Given that these two were deeply engrossed, Asahi cleared his throat to offer a gentle reminder.
The sudden cough startled both Yushiro and Tamayo, especially Yushiro. He reacted swiftly, immediately turning around and positioning himself in front of Tamayo.
"Has one of Muzan's lackeys found this place?"
Yushiro, upon seeing Asahi in his entirely darkened appearance, instantly associated him with Muzan's minions.
It's because only Muzan would be causing trouble for them, and if it is said that a human could do such abrupt appearance, no one would believe it.
"Don't be nervous. I'm not one of Muzan's lackeys. I've come here because I want to tell you something. The Demon Slayer Corps has uprooted all of Muzan's minions, including all the Upper and Lower Ranks."
"And now, the Demon Slayer Corps is besieging Muzan in the Infinity Castle. I've come here to recruit you, Tamayo. Your talents are impressive, especially in the field of medicine. I can help you get rid of the control of Muzan's blood, and in return, you will work under me."
Without wasting any words, Asahi extended an olive branch directly. And to make it more appealing, he also revealed the current situation in the Infinity Castle.
Although Nakime has the spatial ability to send Muzan away, they are trapped within the Infinity Castle now, and Muzan has no chance to escape due to Asahi's lockdown, as Nakime's ability was rendered completely useless.
Moreover, Nakime was facing the siege of a few Hashira, and had absolutely no means of resistance.
Muzan's ability to torment the Demon Slayer Corps so badly, even to the point of nearly annihilating them at one time, was not due to his own power but rather his demons. But now, his demons are gone, and the Hashira are still alive, not to mention there are overpowered main characters accompanying them. It can be said that Muzan is truly in the most miserable state now.
"What?! How is this possible?"
Tamayo couldn't comprehend everything happening before her. She wondered how did Muzan be driven into his main base by Demon Slayer Corps this time?
Immediately after, Tamayo thought of Asahi, the enigmatic individual who was undoubtedly manipulating things from behind the scenes.
"As long as we can eliminate Muzan, I'm willing to do anything!"
A determined expression appeared on Tamayo's face. She is ready to go all-in.
For the sake of taking down Muzan, she was willing to give everything she had. After all, Muzan is her greatest enemy, and she couldn't find peace until he is eliminated.
"Very well, I'll remove Muzan's blood from your body. Once Muzan is dead, as demons, you two will also meet your end. While this lad wasn't created by Muzan, he still has Muzan's blood in his body."
With that said, Muzan's blood in the two's bodies directly seeped out, and then disappeared.
Regardless of whether it was Tamayo or Yushiro, they both felt that their bodies had lost their previous strength, and their demon abilities were rendered unusable. At this moment, they have turned into humans again.
"There are still plenty of surprises, but for now, it's time to witness the end of Muzan. Although we can see it from here, you won't feel at ease until you see it with your own eyes, right?"
After saying that, Asahi opened a gateway and walked through it. As for Tamayo, she had no more doubts at this point and naturally followed suit.