[Make up for regrets + double crossing + decisive killing]

On the eve of his clan's genocide, Sasuke came to the world of Demon Slayer. From then on, the Demon Slayer world had one more Demon Slayer.

Just as he inherited Yunyi's will and was about to kill Muzan, the Sharingan evolved into a Mangekyō, and the power of time and space pulled him back to his original world...

When Uchiha Itachi returned home and was about to kill his parents, he found his younger brother, who was four years older than him, sitting cross-legged at the dining table.

Uchiha Sasuke raised his head, looked at Itachi, who was in shock, and said softly:

"Sit down, brother, and put the knife away. If you use a knife in front of me... you will die."

"I don't want to kill any of my relatives anymore..."

After graduating from Soul Society, he was spotted by a prominent nobleman and became a son-in-law of the Shihouin family. Shihouin Yanma's Zanpakutō awakened the ability to travel through worlds, forging a contract with the dead, granting him a portion of their abilities. His first stop was the world of Naruto. On the night of the Uchiha Clan's genocide, the souls of the fallen Uchiha clan faced the Grim Reaper, who presented them with a choice. "Submit to me, and I will grant you a second life, or perish. Your choice is yours." The Uchiha clan made their decision without hesitation. "We, the entire Uchiha clan, swear allegiance to you, sir." And this was only the beginning. Pirates, Jujutsu Kaisen, Demon Slayer, Nura: Demon Slayer... countless worlds await Yanma's arrival, and countless heroes await his capture after death. When he regains consciousness...

Su Yun, who just wanted to go out to find food, was ambushed by "Optimus Prime" and died on the spot. When he woke up again, he found that he had come to America on the other side of the ocean, and he had traveled through time in his physical body. More importantly, this was Marvel.

What he saw before his eyes was a broken world. He swiped along the wall and it collapsed. Just when Su Yun thought that he had awakened the same Mystic Eyes of Death Perception as Sister Shiki, he saw strange [entries] floating above the heads of passers-by. Su Yun then discovered that there were strange [entries] floating above his head as well. The Mystic Eyes of Death Perception was the ability of one of these [entries]. Su Yun understood that his true abilities were these [entries] that others could not see.

Su Yun found a cloak of Alexander the Great in an antique shop and extracted the term "Conquer" from it. Thinking of a certain conqueror king, Su Yun decided to use the term "Conquer" to summon him.

"Using the combination of [Conquer], [Red Hair], [Charm] and [Cavalry], I'm sure I can point to the King of Conquerors. There will definitely be no problem this time!" Su Yun, who had made a mistake in summoning once, made what he thought was perfect preparation to summon a powerful helper for himself.

The result was that a demon with circle eyes was summoned.

"Ms. Makima, please sign a contract with me and become my family!"

…

[Entry] - [The One Who Escaped Death]: Trapped in death, yet escaped death. Ability: His eyes can see the death of conceptual objects and bring death upon them, manifesting as the Mystic Eyes of Death Perception.

[Personality Correction Fist]: After equipping, hitting the target's head with your fist can break the negative mental effects such as amnesia, split personality, and being manipulated.

[Walking on thin ice] [Falling asleep immediately]…

Ye Yun traveled through the world of the Shinigami and became an ordinary teenager in Karakura Town, hunted daily by Hollows. Fortunately, there's a point-generating system. By absorbing spiritual energy, he can continuously gain points, even increasing his Hollow-like abilities. Too little spiritual energy? Add points! Soul-chopping sword too weak? Add points! Learning the ways of the ghost too slowly? Add points! Until one day, Ye Yun invaded Soul Society to rescue the abducted Rukia Kuchiki. That day, the entire Soul Society was shocked. Kyoraku Shunsui: "Oh no, teacher, a monster has appeared!!!"

Sun Cheng traveled to a special world that was a fusion of countless supernatural ghost movies.

He discovered that there was an extra world inside his body.

The small world can devour everything and evolve continuously, and feed itself

Plant countless crops, sell them to the people at low prices, and earn billions of merits.

Planting countless medicinal herbs, gradually monopolizing the market and becoming the largest supplier of medicinal herbs in the spiritual world.

If I'm not happy with your country, I'll gobble up your mines and fertile fields, and evolve millions of miles of mountains and rivers in my body.

Gradually, Sun Cheng discovered that he had become the biggest boss behind this mysterious world full of demons, gods and monsters.

So, some new ideas came up...

[Theatrical Version: Heart of Gold] [Creation in the Fish's Belly] [Pure Gold] [Hiding in the Lantern Fish's Belly] [Lord of the Pure Gold Lantern Fish]

I am an immortal, how I became immortal is none of your business...

…

Good news, I’ve traveled through time!

Bad news, the timeline is wrong, it's 600 years before the story begins.

Good news, it was eaten by fish!

It's a lantern fish that likes to collect pure gold! From now on, it will be eternally young and immortal!

…

600 years ago,

Abyss was swallowed by a pure golden lantern fish and became the first human to live in the belly of a fish. He gradually transformed the three stomachs of the lantern fish into three small worlds, his own paradise.

And in the long loneliness, he developed and awakened the superhuman language fruit ability,

Talk to the powerful people around the world who are at their peak or in their twilight years.

Extend an invitation to eternal life!

Invite them into the "forbidden zone" where they can avoid death.

Since then, there have been many elderly strong men who choose to enter the belly of the lantern fish to survive.

The world of Abyss' lantern fish belly continues to grow and gradually becomes a "forbidden zone" in the world of pirates.

The incident caused by the appearance of the "old immortals" in the belly of the pure golden lantern fish was called the "Dark Turmoil" by the world.

The World Government sees him as a serious threat, and the world calls him the Lord of the Forbidden Zone, Abyss Abyss!

[Naruto Fanfiction + System Flow + Invincible Cool Article + Not a Saintly Virgin + Decisive Killing]

Traveling through the world of Naruto, starting out as a war orphan, with no bloodline, no background, and no resources?

It doesn’t matter, my name is Kamijue Yusuke, a man who can upgrade his ninjutsu to infinite levels!

While others are still worrying about learning C-level ninjutsu, my [Three Body Technique] has been practiced to MAX, I can form an army with just one thought and be immune to Tsukuyomi!

While Uchiha was still feeling proud of his Mangekyo, my [Fireball Technique] had already evolved into Sun True Fire, and even Amaterasu would have to take a detour when she saw it!

[Taijutsu] MAX: Punches the perfect Susanoo, kicks the Ten-Tails Jinchuriki, and the Eight Gates? What kind of garbage is that!

…

Uchiha Madara: "In terms of Taijutsu, I would like to call you the strongest!"

Orochimaru: "Give up the Sharingan, Yusuke-kun, your body is the most perfect art!"

Kaguya: "You...you're not a ninja, what kind of monster are you?!"

Kanzuki Yusuke, carrying a "planetary-level Rasengan", stood on the top of the gods and smiled calmly:

"I'm just a mortal who has put in the most effort and sweat."

"So-called bloodline, so-called talent, in front of a hardworking person like me, are nothing but chickens and dogs!"

"Lynn Crete, my son, today I must reveal my identity to you." "I am Zeus, the King of the Gods!" "You have awakened. I must warn you. Beware of Hera, Poseidon, Ares, Apollo, Athena..." Listening to his cheap father rattle off a string of names, Lynn Crete calmly opened his inner world and unleashed his mutant followers. "Saints! Attack!" Family feuds, super criminals, world-destroying crises, Thanos, Apocalypse, Dormammu... I simply ask: can you offer me your faith? Can you withstand my followers? Can you withstand my Saints? Mutant God, Son of Zeus, Superhero of Superheroes... Lynn has many titles. Of course, right now, Lynn must first establish his own...

Bai Chen, having just traveled through time, hadn't figured out what was happening when Siegfried usurped his throne. Expecting to bring shame upon the other traveler, Bai Chen suddenly heard a voice. "Chat invites you to join, yes or no?" "I'm dying, why are you here just now?" Huh? There's also a lottery feature? ... Tokisaki Kurumi: "I'm not allowed to post cards here. Thank you for your cooperation!" Bai Chen: "I just got this, newbie. Does it work?" Misaka Mikoto: "Damn you, stinking seal! I told you not to post your face!" Esdeath: "Seals don't matter, Bai Chen, will you be my boyfriend?" Bai Chen: "Huh?! Do I have a bright smile?" Makima: "Bai Chen, will you be my mistress?" Esdeath: "?" Matou Sakura: "Big brother is mine!" Shinobu Kocho: "Bai Chen-kun, you promised me you would take on the Demon King!"...

In this barren ocean world with few islands, sea dwellers make a living by fishing on the ocean all their lives.

Fang Yu awakened a special ability: the ability to upgrade any item.

But he only had a small raft and a small fishing rod...

Fang Yu: "Upgrade!"

[Fishing Rod] Lv.1 No Bait Required → Lv.10 Automatic Fishing → Lv.100 Void Search

[Propeller] Lv.1 Seawater Energy → Lv.10 Strong Power → Lv.100 Sky, Earth, and Sea

[Planting Box] Lv.1 Accelerated Planting → Lv.10 Super Fertilizer → Lv.100 Fruit and Vegetable Evolution

[Small Raft] → [Big Cruise Ship] → [Super City]

Many years later, a huge luxurious ship flew across the sky. Fang Yu stood at the bow, overlooking the entire ocean planet:

"Which island has not surrendered?"