In the Marvel universe:

Captain America: "Tristan, can you stop smiling like that while you're crying like that?"

Iron Man: "Damn it, Diarmuid! Turn off the halo!!"

Ancient One: "Merlin, if you dare to crossdress again, I'll throw you into the Dark Dimension to keep Dormammu company!"

In the world of One Piece:

Garp: "Georgeus, come on! Let's go slay the dragon!"

Sengoku: "Tamamo-chan, give me a boost!"

Whitebeard: "Cú Chulainn, be my son!"

...

Adam Chronos, the ruler of the Throne of Heroes, leads the Heroic Spirits on a journey through countless worlds in search of the seventy-two Demon Pillars that will destroy their worlds.

For revenge, and also for the reconstruction of the world.

Forge bonds with important figures from various worlds,...

[You are the Master of Chaldea, the savior of humanity. ]

[Your evil deeds are known to everyone from Orleans to Camelot. ]

[Every singularity has left traces of being ravaged by you. ] [Your fierce reputation can make servants tremble in fear, and can also stop the little demon pillars from crying at night. ]

[And you like to use this sentence to encourage your comrades the most——] In a certain singularity, Xia You's voice is serious:

"The singularity determines the survival of humanity. The only question is how determined we are to defeat it——My dear servants, have you decided who will self-destruct next?"

This book is also known as: "Being an Aha, I Have to Find Fun."

A young man logged into Honkai Impact 3rd in the middle of the night and timed his pulls perfectly to draw from the 10th anniversary limited gacha pool—the SSS-rank Valkyrie Succubus Kevin.

As a result, I accidentally clicked on the Home Supply.

He died of anger.

However, by the grace of God and the protection of Brother Dawei, his consciousness was retrieved by the legendary system.

[Bound to host, about to cross the world barrier and head to the Honkai Impact 3rd world]

"Where's my great system? Where's my cheat code? Where's the newbie gift pack? I can't be left unable to even be a 'suicide squad'!"

[Drawing cheat codes... Drawed Honkai Impact 3 Kevin panel, already issued]

"Haha! I don't need to become a suicide bomber!"

[Starting time travel... Ahaha... System error... Deviated from the intended address... Unknown...]

"No? Stop messing with me!!"

And so, he arrived in Zone Zero in a daze, and became bound to Zhe.

"I ask you, why can birds fly?"

Zhe: "The bird isn't flying? Is it waiting for me to bring it home and make soup?"

Using the airs of an ancestor to show off.

Using the appearance of fireworks to find amusement, and to promote the greatness of the world snake ancestor Kevin.

Using Old Sambo's appearance to trade information about the World Serpent for Tenny has further unsettled various factions.

"For all your questions, ask Aha; the power of the God of Joy will explain everything."

An Zhiyu traveled to the Land of Shadows, training day after day, year after year, with his master Scathach. In the evenings, after martial arts training, he would receive instruction in magic from Morgan le Fay. Initially, he and Morgan le Fay got along well, and he formed a favorable impression of her.

Then, one day, Morgan le Fay suddenly said, "In a week, the King's Choice will begin. My sister Artoria will extract the Sword from the Stone and become king... I need your help with something."

"What?" An Zhiyu asked.

"Before her, extract the Sword from the Stone, and marry her."

"???"

"The curse has been activated. From today on, you must find a way to marry Artoria!"

This was a world where timelines intertwined. He had extracted the Sword from the Stone, resolved the conflict between Scathach and her sister, and aided Gilgamesh. An Zhiyu thought he would continue his adventures like this.

Until one day, he was summoned by the Holy Grail.

Looking at the group of old acquaintances in front of him, An Zhiyu waved his hands awkwardly: "Hello..."

Artoria smiled and raised the holy spear in her hand:

"Shine in the End of the World!

I was originally a student who had just graduated from university!

Unfortunately, I still can't find a job!

If nothing unexpected happens, Genshin Impact will be coming later.

Under modification, please do not disturb.

I never imagined that one day I would travel through worlds, and it would be my own world!

I originally thought I would be able to roam freely in Minecraft, but I never expected that after awakening the system, I would be able to travel through Honkai Impact 3rd and even use Minecraft items there.

Perhaps it was the Star God's interest that led to the injection of chaotic fragments of memory from a higher dimension into the bewildered consciousness of "Star." The result was that this already despicable pioneer, with the addition of an inner monologue, became even more despicable. Star, who had committed countless evil deeds, stole the Black Tower doll, tried to matchmake Seele and Duck, and even wanted to be Duck's stepmother. She petted Tingyun's tail in the Immortal Ship, reenacted the Immortal Ship past with Xiao Guizi, and finally, her filial piety turned into a corrupting influence on Kafka. She even went to Teyvat, where she met Yingmei and went around flirting with girls and causing trouble—disrupting the Rock King's retirement plan, colluding with the fox woman to break Shadow Dao's heart and stop pursuing eternity, then abducting Nashida in Sumeru, and going to Fontaine to harass Frinina. But everything has a price. When countless girls who had been deceived stormed into the Dust Song Pot to confront Star and question her about why she was so despicable, Star could still stand tall with her hands on her hips and say righteously: I am just fighting for all the good things in the world! To make this world the way I envision it… Wait, what's that medicine in your hands? Herb resistance potion? Wait… wait a minute! Can we make peace? So many people… No, no way! -- Primarily set in the Iron Plains, with possible inclusion of other ACG worlds in the mid-to-late game.

[Day 1 of the time travel: Wearing Adi King's battle suit and dark red hair, is Emiya Shirou actually me?]

[Day 3: Confirmed, this isn't the UBW questline, no Red A experience packs, so I'll have to rely on myself to master Unlimited Bladework.]

[Day 20: Strengthened my magic proficiency and began practicing Projection. During this time, I met an alchemist who asked me where I got all these alchemical weapons made from recycled metal.]

What the hell is recycled metal?

[Day 90: Finally mastered my first Noble Phantasm, Projection. They exclaimed, "This is the Seven Kingdoms," an outstanding achievement in alchemy."]

Huh? I don't really understand you alchemists.

...

[Day xxx: Huh, I finally mastered Unlimited Bladework! Their expressions were fascinating, and they asked where the Nibelungen was.]

How come you don't even know about the inherent barrier? Isn't this... Type-Moon!?

Rhodes transmigrated to Beloberg, encountered a monster from a different world, and couldn't defeat it despite his best efforts. However, he transmigrated to countless worlds where soul fragments appeared, sharing his memories and power. But their art style seems a tiny bit off... Muzan Kibutsuji: Noble families never fight alone. Yoriichi Tsugikuni, go ahead and talk to my army of 100,000 demons! Esdeath: Forward, conquer, I will finally unify the world! Sirin: This is the complete Herrscher, the complete Sirin, the complete me! Talulah: In the name of the Red Dragon, Victoria, I will return like lightning! Morgan le Fay: Kings are never chosen by heaven. Foolish sister, return to my golden cage, sing my praises! Rin Tohsaka: Farewell, Father, and my cowardice. This is the time to ascend to godhood! ...Alright, alright, everyone seems to be quite troublesome. It seems I have to come out of seclusion and enjoy the company of the demoness. Eh, wait, you guys... Waaah!

So I'm not Illya after all, but Chloe?! I've become a little black, but I'm not actually black. The world's cutest magical girl, full of energy and upholding love and justice, Chloe-chan, has arrived! Worlds I've experienced: Magical Girl Illya, Magical Girl Nanoha, Magical Girl Madoka Magica…”

New author, seeking support.

There will be movie trailers, locust plague machines all around...

There is a main character, but don't worry, the main character won't even have a name; they're just a tool.

[There is a main storyline, which may include side quests; a PV for the simulated universe storyline is a must.]

(Disclaimer: Please don't get too hung up on the details. Also, some of the characters in my fanfiction may have personalities that differ from the original story. I read a lot of fanfiction, and some of their traits are deeply ingrained in me. So, please understand them as characters from my fanfiction. Also, I couldn't completely replicate the original story for fear of being shut down, since the original is too long... Of course, if you still can't stand it, you can interpret it as a parallel world.)

[By the way, the author will try to avoid being like that other author's work; the protagonist won't be too weak, and the author will try to depict their strength as described in the original synopsis. Of course, all of this depends on the author's writing style. If you are not satisfied, I am truly sorry. QQ]