Transmigrated to another world, I'm a programmer. Pay me? No, patch me! What to do when I discover the magic system is riddled with bugs? I need help urgently! So, I optimized the fireball spell, invented the magic gun, and equipped the elven knights' shields with a "counterattack program." While others were diligently practicing spells, I was fine-tuning parameters; while others were searching for artifacts, I was coding cheats. Demon infiltration? Racial conflict? Kingdom wars? Before absolute technical power, they are all system errors that need fixing. Sorry, this other world has been rebuilt by me.

He transmigrated into Huo Yuhao's body and used a cultivation simulator to cultivate immortality in Douluo Continent.

A small shock about cultivating immortality from a certain god-king with ulterior motives.

Occasionally, I'll dress up in another world for fun.

[Semi-comedic, please refrain from criticism if you dislike it][Fate fanfiction + JOJO Stand][New author's work][Don't try to think too much, the author is clumsy][No female lead]

Good news: I've been transported to Fate and become a Heroic Spirit.

Bad news: The Master is Ryunosuke

There's no other way, I'll have to find Saber and form an alliance first.

Time: Saber, you're next. Let's form an alliance.

Saber: But I refuse.

As she spoke, Saber walked toward the hour.

Shichen: It's actually walking towards me? It didn't choose to run away, but instead walked towards me?

Saber: How can I beat you up if I don't get closer? Caster.

Time: Roar↗Roar↘ Let's get a little closer.

Li Yan, 24 years old, is a student. He finally accumulated enough progress to unlock his cheat code after hundreds of sacrifices. But the members of this group chat... [Seated Titan Reiner]: Li Yan, are you still alive? That's great! When are you coming back?? [Li Yan]: ... [Herrscher of Knowledge Fu Hua]: Li Yan? That's great! Are you still alive?? I miss you so much. I only made a small mistake, I never thought I would lose you. I'm still the wife you said I was, right? [Li Yan]: .... [Kakyoin Noriaki]: I'm sure, not long ago... [Xiao]

Bai Tianyu travels through the world of Soman. At the beginning, he activates the chat group system. He obtains the system of the Cosmo God Group. Every time he recruits a Saint, he can activate the corresponding Saint's skills. He begins the journey of building his own sanctuary and collecting the twelve zodiac signs. Busujima Yako: Who can help us? I am willing to give my all. Esdeath: Fight me to your heart's content. As long as you defeat me, you can do whatever you want with me. Alicia: Oh, it's really difficult, but if you can solve the Honkai, I may not be unwilling to serve you. Leone: As long as you help the revolutionary army overthrow the empire, I am willing to give my all. Hill: Me...me too! ... Of course, Bai Tianyu will also find some good talents in his spare time to recruit them into his sanctuary (harem). You are all my wings!

To avoid being AOE'd by a certain useless angel when she blew her horn, the time traveler Qingshuiquan embraced his past life simulator and began to grind. As he was grinding, Qingshuiquan suddenly realized something was wrong. Why were they looking at me more and more strangely? Yukinoshita Yukino from the next class, J, always looked at me with a dazed look. Ms. Yoel, whom I just met, was always looking at me from behind with complicated eyes. And my childhood sweetheart Fumino Furuhashi was also acting strangely. For some reason, she was wary of every male friend of mine who excelled in science. Of course! The strangest thing was that useless angel. I had no connection with her, so why did she come to me on her own initiative?

[Leisurely] Li Qing transmigrated, his identity one of nobility—the son of a city lord! But at the start, not only did he lose all his original memories, but he also nearly woken up naked, almost lying dead in the streets! A system? An old man? A cheat code? He searched high and low, examining his entire body, but only found a jade pendant engraved with the character "Qing." Until a torrential downpour—a mysterious notification sounded in his mind: [Water Control Technique: 1%] The rain became his sharpest blade, his strongest shield. He initially thought this was an ordinary ancient world, but gradually discovered: There is a martial arts world, sects, and martial arts—a truly low-level martial arts world. And with his [Water Control Technique], he had already stood at the pinnacle of martial arts, revered as a grandmaster! A green robe fluttered in the wind, a gourd hung at his waist. And… a slightly delicate two-foot-long sword? (Although the style was a bit effeminate.) He traveled thousands of miles south to find his relatives, wandered through the conflicts of the martial arts world, and incidentally raised an empress. Who is he? The passersby were all astonished, bowing their heads and whispering – "The Green-Clad Sword Immortal, Li Qing!"

Transmigrating to various anime worlds, Lin Yi is bound to a god-level sign-in system and starts his journey by parachuting into Demon Slayer!

Sign in at the Kamado house to unlock the Demon Blade Thousand Blades, unleashing a multitude of blades to slay all evil spirits; sign in at the Wisteria Forest to obtain the perfect inheritance of the Breath of the Sun, where the blazing sun burns away the darkness of night.

Starting from the world of Demon Slayer... In each world, he keeps checking in and getting stronger! Eventually, he becomes an unparalleled powerhouse spanning multiple anime series!

Superman's ability limiter is removed, breaking through the individual limit of [Superman] to infinity! Day 1: With great power comes great responsibility! Day 2: Strength continues to increase, mastering power. Day 3: I don't eat beef! And while standing shoulder to shoulder with the sun, he awakens the interdimensional gate. Of course, he'll go meet those powerful figures from the two-dimensional world! But before heading to the two-dimensional world, he still has some things to do on Earth! Cherry blossoms? The entire island sinks into the sea! Black people? Slaughter them all! South Korea and the United States? Annihilate them! Having finished his tasks, Li Chaofei heads to the two-dimensional world, feeling refreshed, to find some fun for himself! After all, life is a game meant to be played with a smile!

This book is also known as a crossover anime, and the cheat code is a hypnosis system?; My hypnosis is invincible!; I must hypnotize you, Aura!; No one knows hypnosis better than me! Good news, I've transmigrated, and it's an infinite flow crossover anime! But why did I get this kind of system? Why did I become Aura's puppet?! [Distributing system rewards...hypnosis] "Oh? Things are getting interesting." [Target Aura----Common sense implantation in progress] [Common sense 1: It's normal for your heart to race when you encounter a handsome subordinate puppet] [Common sense 2: You won't allow a good-looking subordinate puppet to die] [Common sense 3: Your heart will race when you see a good-looking human you care about] Very good! Evil Aura, accept my hypnosis! And you, you despicable assassin Yubel, how could you be so bad? From now on, you'll be helping old ladies cross the street every day, and Frilian, you too! ...Considering anime such as "Re:Zero -Starting Life in Another World-", "A Certain Scientific Railgun", "Mushoku Tensei", and "KonoSuba: God's Blessing on This Wonderful World!" "Chainsaw Man" and "Fate" are also being referenced. If the story becomes long later, it can be written as a crossover anime daily life anime side story!