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.)

"Hey? System! What do you mean Nohara Shinnosuke is a Pillar? What do you mean Uchiha Sasuke is a Pillar? What do you mean the Pillar Men and Hashirama are Pillars? Tailed Beast Jinchuriki? Josuke Higashikata can do that too?!" Lu Li unexpectedly transmigrated into "Demon Slayer" and awakened the Demon Slayer "Pillar" Summoning System! Every three days, Lu Li can randomly draw a "Pillar" and gain all of their abilities. Just as he was excitedly preparing to open the system and use the Pillars' abilities to fight Muzan, Lu Li discovered that the "Pillar" drawn by the system seemed a little different from what he expected. "Hey! System! I can tolerate the previous ones! But system, what the hell is this Optimus Pillar you summoned? Kibutsuji Muzan, huh?! Kokushibo, huh?! Tell my luck!" ...Tentative protagonist's alternate worlds: "Demon Slayer," "Fate/Zero," ...

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!"

Kotoji Mirai transmigrated to Soul Society and became a carefree, lazy bum in the 9th Division. Unfortunately, his salary wasn't enough for drinking, so he resorted to writing novels for the *Seireitei Newsletter* to earn extra money. His first novel, *The Arrogance and Loneliness of a Prodigy*, featured the protagonist "Aikawa." The next day, a junior named Aizen Sosuke, with a gentle smile, came to ask him about the profound meaning of the "Throne of the Sky." His second novel, *The Murderer of Meteor City*, featured the protagonist "Shuka." That night, the gentlest captain of the 4th Division, Unohana, sat in his room with a sword, smiling as she asked him: "What is the meaning of 'the loneliness of a mad beauty'?" Kotoji Mirai was now panicking, currently writing *The Invisible Empire Hidden in Soul Society*. Would he end up killing off his own people? Kotoji Mirai discovered that, without realizing it, he had acquired the title of "The Most Beautiful Nobleman in Soul Society." "Isn't this going to kill me?" He drew his Zanpakuto, unleashing his true name, "Zhuiwen Banshou" (meaning "All Things Under Heaven"). "The future of Soul Society will be written by me."

Shirakawa Shiki traveled to the world of anime, flirting with beautiful girls in the air, and lived a comfortable life. However, why are their eyes getting more and more wrong? Yukinoshita Yukino: "Shiki-kun, which one is the real you?" Sakurajima Mai: "Let me be your only bunny girl, okay, Shiki-kun." Kasumigaoka Utaha: "I obviously met you first, why..." Kitagawa Umi: "Shiki-kun, I only wear cosplay clothes for you to see." Kato Megumi: "The personality of the senior is a bit bad, but..." Nakano Miku: "Shiki... Shiki-kun is the samurai in my mind." Makinohara Shoko: "Wu... O*chan is Shoko's, you thieving cats!" The main focus is on the daily world of anime, and other female characters will appear in the future.

Transmigrated into the body of a genius with explosive intelligence, only to discover he can switch between anime worlds. Rejecting sadness, rejecting mediocrity, he embarks on a path of unstoppable dominance!

[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!

[Invincible + Villain + Special Curse Spirit Cook + No System + Slow to Warm Up] My name is Hannibal, usually everyone calls me Uncle Hannibal. During the day I am an ordinary uncle next door, but at night I am an elegant gourmet. My favorite thing is to find the right ingredients. Gojo Satoru: I used to think he was just a normal person, until he pinched my neck and punched through a mountain. Sukuna: I'm sorry, I couldn't satisfy you. You know more about curses than me. Fushiguro Shiji: What Tianyu Tyrant? These are nicknames given by acquaintances. You can just call me Xiao Shiji. Geto Suguru: I heard that you don't have any children. I want to take care of you in your old age, godfather. Itadori: Uncle Hannibal, your cooking skills are really great. Excuse me, are these barbecues pork? Hannibal, who was dealing with a real corpse in the kitchen, wiped the blood off his hands, gently raised his glasses, and said gently: "Eat more if you like. This is the ingredient I found with great difficulty."