Transmigrating to the world of DanMachi, Roland finds himself penniless and his body transformed into that of a child. He expects a miserable existence in this world, but a screen suddenly appears in his mind. It transforms Roland's body into that of a mage with the Dark Eye, wielding the powers of the five major classes. At Ariste's invitation, Roland joins the Astrea Familia. To survive in this world of swords and magic, he joins the Familia, embarking on an infinite journey to become the strongest. (Tentative) Main Story: DanMachi

A bizarre event occurs, the world ends, and Lin Bai unexpectedly obtains the Dark Decade Driver before his death.

From then on, Lin Bai embarked on a journey to gather power from all the heavens and defeat the strange beings.

In the Kamen Rider world: "So you're Oma Zi-O? Then I'll accept your power."

In the world of armor: "Is this the Emperor Armor? Not bad, I'll accept this power as well."

In the Ultraman world: "The Four Mysterious Ultras are indeed terrifying, but this power is mine now."

World order: Kamen Rider - Armor Hero - Ultraman series

The future world is tentatively set...

No female protagonist + multiple worlds + trading

Here you can see emperors queuing to trade, and you can see gods selling their own blood.

Anything is possible here, as long as you can afford it!

Yu Hao: "Our shop adheres to the principle of equivalent exchange. I am not a demon who takes your soul; I am just a small businessman!"

Finite or infinite life... ordinary or extraordinary soul... extreme or mundane emotions... or even supernatural abilities... Here, tragic fate is something everything can be traded, everything can be changed. Who you are, where you come from. Whether you are an absolute villain, a compassionate saint, or an ordinary person, the moment you arrive here, your fate may change, provided you are willing to give it up. Here, everything follows an absolutely 'fair' trade, and everything can be traded, including you and me. So, the Bilibili girl... hiding on the sofa...

Thanks for the invitation. In the 99th Rank, ruthless killing is the norm. Du Yang transmigrated to the Naruto world, becoming a member of the Uchiha clan. The night of their massacre was approaching, and he was powerless to stop it. In his despair, he entered a mysterious realm and discovered that he had transmigrated simultaneously, and his cheat system was himself—talents, skills, abilities…everything could be shared without any restrictions. Naruto Uchiha Du Yang: "Brothers, enough chit-chat! I'm starting with a whole bunch of Mangekyou Sharingan, one pair for each of you. Enough said, let's make the Uchiha great again!" One-Man Du Yang: "I'm starting with a triple Reverse Life Technique, let you know what true unparalleled power is, put pressure on the Old Master." One Piece Du Yang: "Haki is everything, I'm starting with a Haki-enchanted Binding Technique." Marvel Du Yang: "I'm also giving away a Level 5 Mutant, not only that, I can learn the abilities of everyone in the Marvel universe." Dragon Clan Du Yang: "I'm starting by cutting down Odin, the Dragon King is here to be killed." Cursed Arts Du Yang: "Gojo Satoru, what did you say? Who's the strongest?" Du Yang never expected that their first sharing would place them at the pinnacle of their respective worlds. One Du Yang wasn't enough, but all the Du Yangs combined were unparalleled, invincible.

"Naruto, you must build good relationships with the elites from various villages who came to the Chunin Exams this time. Later... what? You reported them for cheating on the exam??"

"Naruto, you absolutely must bring Tsunade back to the village! She's the granddaughter of a legendary figure, and one of the legendary Sannin... What? You brought her back to your house?!"

"Naruto, this Five Kage Summit is of utmost importance. You must remember not to act recklessly as before and antagonize other villages... What? You beat the other four Kage to their knees??"

"Naruto, now that you've become Hokage, your every word and action represents the village, so you must be careful with your words and deeds... What? You're demanding that all female ninjas come to your office every day to report on their work??"

...

Transmigrating into the Naruto world, becoming Naruto before the Chunin Exams, and awakening the Evil Deeds System:

You can gain evil points by doing evil.

Ninjutsu, Sage Art, Bloodline Limits—all are within easy reach!

Naruto in the original work—a loser, a simp, a master of talk-no-jutsu, and suffers all sorts of injustices...

Now--

"Heh, doing bad things and doing whatever I want, that's my way of the ninja!"

Byakuya is transported to the world of ghouls. He's being pursued by Rize, an SS-rank ghoul, and has already agreed to a date. However, he knows Rize sees him as food, and if he goes, he'll be facing his thesis defense tomorrow… Luckily, his system activates in time, allowing Byakuya to go on his date with Rize! But after using Byakuya, Rize plans to discard him! Thus, Byakuya is forced to fight back!

When he came to his senses, Nan Zhixing found himself sitting on a moving train, speeding along, the scenery outside the window rushing past. He had no idea what the journey would take him next. "How did I get on this train? Where did this train leave from? Where am I going?" These questions swirled in Nan Zhixing's mind. He tried to recall, but as soon as he had a thought, a sharp pain shot through his head, followed by a torrent of memories. He, Nan Zhixing, a young man from the new century who once grew up under the red flag, inexplicably transmigrated on the day he received his university acceptance letter at eighteen. His body and mind were transmigrated, but into the Kamen Rider series world. Yes, the series world. Whenever Nan Zhixing achieved a hidden goal, he would move on to the next Kamen Rider world, like completing a game, until he had conquered all the Kamen Rider worlds. Time flew by, and from the age of eighteen when he first entered the Kamen Rider world, Nan Zhixing was now twenty-three years old. Next, he would board this train to a strange city called "Giwatos" to become a school teacher. Wait! Why would I go to Giwatos to become a teacher? What kind of strange city name is Giwatos? It sounds… somewhat familiar? Nan Zhixing lowered his head, trying to recall, but found he couldn't remember anything about these three questions. Normally, his memory wouldn't be so bad as to forget these things, but now, no matter how hard he tried, he still had no clue. Could this be another knight world, and I've actually been brainwashed and modified by the villainous organization? Nan Zhixing looked up, wanting to look at the opposite window to see if his appearance had been changed, but unexpectedly saw a line of slightly abrupt blue text: "System successfully activated, starting up…"

Transmigrating to the world of One Piece, enduring hardships to become a powerful figure, only to be betrayed by the world and face a death crisis, she is reborn as Asagami Fujino, invincible across countless dimensions! This is the story of Asagami Fujino's invincibility. All settings have been altered; please refer to this book for the most accurate version. The protagonist is a yuri (lesbian) character. If you dislike this, please refrain from criticism. Thank you for your cooperation. Type-Moon—Stealing the Stars in September—Back to Type-Moon—Gensokyo: Age of Gods—Re:Zero -Starting Life in Another World-—Katanagatari (Short Story)—Date A Live (Tentatively Completed)—Arknights (Ongoing)

[No system + Uchiha clan + forbidden techniques + Mangekyou Sharingan]

On the night of the Uchiha massacre, Uchiha Gen struck first, slaughtering the Uchiha clan and taking their Sharingan.

He defected from Konoha and joined the Akatsuki organization before Itachi Uchiha.

They tricked Hidan into stealing the blood bank and the ninja sword.

To change the deaths of Akatsuki members.

Instigating a war between the villages of the ninja world.

Why not make the boring ninja world more interesting?