Traveling through the world of Demon Slayer, Shigure opens the role-playing system of the universe.

The higher the missions completed and the degree of character restoration, the stronger the power gained.

The first task required at the beginning is Bai'e.

"? Bai'e beats Wuzhan? Doesn't having hands do that?"

[Player progress reaches 15%: Unlock the weapon "Dawn Invasion"]

[Player progress reaches 30%: Unlock the form "Fire Walker"]

[Playing progress reaches 50%: Unlock the form "God of Evil"]

"Nanook... uh no, Muzan Kibutsuji, I bring destruction upon you!"

Muzan Kibutsuji: "No red blade? No markings? Are you also a pillar?"

Shigure: "Pillar?... Pillars are considered pillars."...

Muzan Kibutsuji: "It's useless. Unless I wait until the sun rises, I can be resurrected even if only a piece of flesh is left..."

"I am"

"?"

"The blazing sun will eventually rise!"

[System pays for life][Exhilarating combat][Thunderous][Growth]

When Yasui Ryosuke is transported to the world of Demon Slayer, he is devastated.

Good news: He is familiar with the original work and knows the plot.

Bad news: The original owner was a sickly person who was not long for life, and the only cheat was the double-dealing system that required spending a lot of time and effort to become stronger!

"You mean killing demons grants you lifespan, which can then be used to enhance your breathing technique and sword skills?"

Yes, that's right~

How much longer can I live?

[Congenital liver failure, at most one year, haha~]

"Fuck your sister!"

Yasui Ryojie was angry.

What kind of good system would make a cancer-stricken host risk their life?

Knowing the original plot, Ryosuke would never willingly seek his own death by joining the scoundrel Muzan.

If that's the case, then kill!

Kill them until the sky darkens...

Ever since the Breathing of Fire was developed during the Warring States Period, more than 80% of the Flame Pillars have carried the name of Purgatory.

Even Rengoku Kyojuro, the last Flame Pillar of the Taisho period, gave up his own dawn for the dawn of others.

But if history diverges,

That one,

It keeps growing upwards,

The flower called "Purgatory"

Inadvertently, a fruit was born, but it was helplessly abandoned. Who can guarantee that it will sprout again as a seed in the shade and grow in a deformed form...

Or will it just be a fallen petal, transforming into nutrients to dedicate itself to the growth of future generations...

(I write simply because I feel like writing. My writing may not be good, and the updates may not be on time. After all, I am also a quasi-working person.)

Su Chen traveled through Demon Slayer's Spider Mountain and almost got killed as he landed.

At the critical moment, he awakens the golden finger and has an incredible understanding.

In the end, he was injured and rescued by Shinobu Kocho and became a member of the "Butterfly House".

Su Chen goes out with Shinobu Kocho to rescue people during the day, and secretly kills ghosts at night to make money to support the girls in the Butterfly House.

While walking, constantly use the golden finger to observe and learn.

[You observed Shinobu Kocho's healing process and gained something from it. You created your own skill: Supreme Poisonous Healing!]

[You observed Kanao's sword training and suddenly an idea struck you, revealing a unique sword technique. A thought blossomed!]

You spied on the former Sound Pillar's thunder cry, gathering mosquitoes into thunder. Deeply impressed, you modified it slightly and developed the Lightning Release - Chidori Style!

From then on, Butterfly House had a famous and evil male doctor.

When everyone asked Su Chen why he worked so hard, Su Chen's thoughts were very simple.

"Why kill ghosts? Of course, it's to keep the flowers in the Butterfly House working well and feeding them!"

[Invincible + Everyday + Relaxed + Action-Packed + Substitute + Ten Shadow Technique + Asura Armor]

He was unexpectedly transported into his mother's womb and in the future, he became the twin brother of Gojo Satoru in Jujutsu Kaisen.

The two brothers, who both have six eyes, went down completely different paths in life from the very beginning.

Relying on his innate six eyes, he will eventually advance the Ten Shadows Technique to the Two-Element Shadow Technique.

The Demon Void adapts infinitely to all things, while the Jadoro perfectly reproduces all things.

Just because you can kill someone temporarily doesn't mean you can kill them forever!

Not winning now doesn't mean you can't win forever!

The future, wielding the strongest spear and the strongest shield, will dominate the world of magic with invincibility!

...

Lufa: Where's my armor?

Future: Here you go!

Su Nuo: I admit, you are stronger now.

The future: Don't forget, you are the challenger!

Lu Suo: In the future, I want you to be my devoted subject!

Future: Lu Suo, I will make you a dead soul beneath my halberd!

...

To you two thousand years from now: What's the use of guarding an empty throne? Come and protect me, stand up!

...

Note before viewing: Satoru and Shoko are a couple, as are Jaden and Riko. The rest are all male protagonists. The male protagonist has a strong villainous personality. If you don't like villainous characters or prefer Shoko as the female protagonist, please be cautious before entering.

...

The previous text has been revised, so please feel free to read it later. If you have any other questions, please feel free to comment and correct me. In the future, I'll only listen to your advice!

[Spell Return + Twelve Talismans + Invincible Cool Text + Not a Saint]

Jiang Chenyan travels to the world of Jujutsu Kaisen and begins by activating the power of the twelve talismans. The Dog Talisman grants immortality! The Rabbit Talisman grants unparalleled speed! The Ox Talisman shatters all obstacles! Gojo Satoru: "I've never seen your technique before. It's very interesting." Jiang Chenyan wields the Dragon Talisman, and with a burst of flame, he blasts the special-grade cursed spirit into dust. When the twelve talismans are combined, even the curse king, Ryoumen Sukuna, will have to obey my orders!!!

At a comic convention, Otonashi unexpectedly encountered an adorable little octopus preaching, but made a sarcastic remark, and then found himself transported to the Naruto world.

Not only does it lack a system and bloodline, but it also has something resembling an octopus's mouthparts on its body...

The good news is that this thing can eat anything!

Whether it's animals, plants, or various elements, you can extract energy from anything you eat, and it can even strengthen your body and evolve your life level.

The bad news is that this thing replenishes what you eat...

Are the Sharingan and Byakugan strong? You'll grow as many as you eat!

Are tailed beast chakra strong? Then you probably wouldn't mind having a few more tails, right?

Are Devil Fruits powerful? Would it be okay to have more markings on my body?

In order to survive better, Otonashi has no choice but to forge ahead on an indescribable path of distortion.

Otonashi: "Don't let my usual respectable appearance fool you, actually I..."

gurgling sounds (tentacle wriggling sounds)...

Ye Feng transmigrated, and it was his second time! In his previous life, he was a renowned demonic cultivator in the cultivation world. In this life, he was reborn into a modern metropolis where spiritual energy is scarce, making cultivation difficult. However, there are many characters possessing the world's destiny: Takanashi Rikka, Kasumigaoka Utaha, Kato Megumi, Yukinoshita Yukino, Sakurajima Mai… With orthodox cultivation methods ineffective, Ye Feng was 'forced' onto an unorthodox path of cultivation… Takanashi Rikka (shyly crouching down): If I do as you say, will I obtain the Evil King's True Eye? Yukinoshita Yukino (angrily opening the door): Don't make things difficult for my sister and mother! Come at me! Kasumigaoka Utaha (gritting her teeth): You hentai Ye Hua-kun, how could you do this?! Yuigahama Yui (looking confused): Ye Hua-kun, what are you doing?!

In the worlds of Naruto, One Piece, Bleach, Demon Slayer, and One-Punch Man, what kind of effects would Link have if he combined chakra with breathing techniques, Haki with limiters, and spiritual pressure with genjutsu?

Brief introduction - just take a look

Li Yun transmigrated into the world of the popular Japanese manga "Blue Prison" from his previous life. Suddenly, he was given a system! Maxing out his vision and passing attributes, he began to dominate Blue Prison with his dazzling passes! Beckham's curveball! Absolute ball control! If you can imagine it, there's nothing he can't learn. This novel is purely fictional; please do not take it as fact.