Demon Slayer: Muzan, will you dance too?

Perhaps she was moved by Kiyokawa Izumi's words, or perhaps her recovery ability had reached its limit.

When the first rays of sunlight rose in the morning, Kokushibo's shattered body had not yet been restored.

Bathed in the warm sunlight, the broken body burst into flames at a visible speed. No matter how unwilling it was at this moment, the defeat could not be changed.

In his final moments, he vaguely recalled his original dream—he wanted to become the strongest warrior in the country, to become the so-called number one in the land.

But his younger brother shines as brightly as the sun.

Born with freckles and a translucent appearance, he was so unique.

Driven by twisted jealousy, his pursuit over four hundred years was nothing but a laughable obsession.

His life was a tragedy.

It's called jealousy, but really it's just wanting to be like Yoriichi Tsugikuni.

As most of his body began to slowly dissipate, his remaining eyes turned to Kiyokawa Izumi—the moment he saw this young swordsman, the words that man had spoken echoed in his mind once again.

Even if you don't find a suitable successor, there's nothing to regret about honing your swordsmanship and breathing techniques to the extreme.

Later generations are not necessarily inferior to them; excellent swordsmen will also emerge.

Whether it's the patterned, the translucent, or the crimson blade, this young swordsman has mastered them all.

Swordsmanship honed to its ultimate level has already entered the realm of the superhuman.

The only pity is that he probably won't even live past twenty—the combination of the markings and his special breathing rhythm has brought him a significant and enormous boost, but this is not without its side effects.

The markings are a technique that overdraws life force, and the special breathing rhythm is also a way to burn through lifespan. He is still relatively young, so how long can he live?

There is only one solution.

To prolong one's life, one must become a demon.

Will this young swordsman, like himself in the past, choose to join Muzan in order to prolong his life and become stronger?

Kokushibo became inexplicably curious—if he were to become a demon, becoming one of the Upper Moon Ones would be inevitable, and his strength would definitely surpass his current level.

Unfortunately, he couldn't witness these events.

Kokushibo died at the moment the sun rose!

……

Kiyokawa Izumi put down his badly worn Nichirin Blade. Before he could even say anything, he felt an immense heaviness in his body, as if his consciousness had been ripped away.

I could clearly sense the loss of life force; it was so obvious, so unsettling.

When he woke up again, he was already in the Butterfly Mansion.

Even though she had accepted the side effects of awakening the markings, she couldn't help but have wild thoughts at this moment—her body hadn't changed significantly, she didn't feel particularly weak, and apart from a strong feeling of hunger, there was nothing else unusual.

Unlike translucency, freckles are much easier to develop. Simply raise your body temperature and increase your heart rate to over 200 beats per minute, and freckles can appear on your face at any time.

Black text appeared before my eyes, indicating that the swordsmanship had reached the sixth level and the "Idiot System" had given it a very high rating.

In terms of expressiveness, as a human, he is still limited by his fragile flesh and blood. While he can easily cut through boulders, he is far from being able to break mountains and fill seas.

The system's reward for this breakthrough was very generous—he could choose any three ninjutsu or taijutsu techniques.

However, it was all for naught.

Even a reward like a Sage Body would be something he would gladly accept—even if he still couldn't master chakra, a special physique would definitely be much stronger than a human body.

Their resilience alone was enough to make him extremely envious.

Unfortunately, the stupid system will never know what he really needs.

Even if you helped him evolve his Sharingan, Kiyokawa Izumi wouldn't be so speechless.

After a moment's consideration, Kiyokawa Izumi naturally chose swordsmanship—the Uchiha family's swordsmanship, plus the so-called Konoha style. Different systems of swordsmanship are worth studying and referencing.

He didn't think that reaching the sixth level of swordsmanship was the end of his career, nor did he arrogantly believe that he was now on par with Yoriichi Tsugikuni.

……

There are quite a few Pillars and ordinary swordsmen recuperating at the Butterfly Mansion.

Kiyokawa Izumi's injuries this time were not serious, just superficial wounds, without any serious internal injuries. After a short two days of rest, he was able to get out of bed and move around. His obviously stronger recovery ability may not be a good thing, but he didn't take it to heart.

After briefly visiting the other Pillars, Kiyokawa Izumi prepared to leave the Butterfly Mansion—she still needed to talk to Ms. Tamayo about the Mark.

This time, quite a few pillars have awakened their markings.

A pillar of fire, a pillar of water, and a pillar of wind.

In the final, fierce battle, after Sanemi's repeated questioning, he learned about the Mark from his older brother and awakened the Mark just before sunrise.

They are all making a final effort to defeat Muzan.

They all looked calm and their mindset wasn't affected by the side effects of the marks.

Sanemi even wanted to fight Kiyokawa Izumi in order to adapt to his improved strength.