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!

Fatti, transmigrated to the world of DanMachi, starts with a fully-equipped arsenal of three magic spells and seven skills. Unfortunately, his potential is extremely limited, preventing him from seeing further. It's only after accidentally discovering a hidden treasure chest function that his life takes a dramatic turn. He opens invitations to recruit familiars from other worlds, acquiring various magic books and transforming himself from a mage into a noble sorcerer. With the goddess Demeter as his backer, he secretly accumulates strength, manages his familiar, and quietly develops his power. From then on, he cautiously and steadily begins his fantastical life in this other world.

Yao Jia probably never expected that hitting the jackpot would actually damage his soul.

Countless fragments of souls, carrying Yao Jia's essence, crossed dimensions and were reborn as familiar or unfamiliar two-dimensional beings.

After retrieving the reincarnated soul fragments, Yao Jia, as the main body, could directly resonate and gain power, but unexpectedly, all the clones were of the opposite sex...

Huo Yuxi: "Can a mere God Realm withstand a punch from me, a being of stellar level?"

Liu Ou, "Comprehend the laws of space? Would you like to see my spatial authority?"

Kiana: "All tragedies crumble before 'me'!"

Yao Jia some time later—

"Was I really this narcissistic?"

My wife is so beautiful! (×)

I'm so beautiful! (√)

Transmigrating to a crossover anime world where gods and demons coexist, and cursed spirits dance with monsters. Lin Qingping, a top student from a small town, achieves first place in Chiba City's unified exams and enters Soubu High School. He's then chosen by Mrs. Yukinoshita to marry into the Yukinoshita family! He becomes Yukino's fiancé! He thought he'd be living off his wife for life, but unexpectedly, he awakens an upgrade panel! He starts by copying the Mystic Eyes of Death Perception, instantly reaching max level! He'll kill even gods if they're alive! Yukinoshita Yukino: "Yukino is one thing, but why did you even... Mom..." Yukinoshita Yukino: "I'll say it again, don't call me 'sister-in-law'! I was here first!" Suo Yuki: "Big brother is mine!" Hyuga Hinata: "Luckily, I only have one sister." Otsutsuki Kaguya: "Hagoromo Hamura, come and pay your respects to your Uncle Qingping!" Lin Qingping: "At first, I really just wanted to be a kept man!"...All virgins included! A harem fantasy!

Reborn as Lu Mingfei, awakening a simulator. At this time, Lu Mingze was still unconscious, and Chu Zihang had just exited the overpass. Everything was still in time. Lu Mingfei left the literary society and officially activated the system. He started the simulation; the first world was *Under One Person*, but it was a bit early. [Apprentice to Zuo Ruotong, cultivate the Reverse Life Triple Stage, and help Zuo Ruotong cultivate Innate Qi.] [You have reached the destiny node. Do you want to save and return your cultivation?] "Save and return!" [Ding! This simulation has been saved. You have obtained the Reverse Life Triple Stage cultivation and the Innate Qi refining method.] Lu Mingfei used Innate Qi to heal himself and the three royal siblings, completely controlling the Snake Clan. Herzog: "Who are you? How could you possibly cure a split pons alchemy surgery!" Lu Mingfei: "Innate Qi, you bastard!" Lu Mingfei began to build his own dragon-slaying organization, Chu Zihang...

Traveling through time and space at the same time.

The dump truck arrived as promised, and Bai Yu split open.

He traveled through time, or rather, they... traveled through time.

In the world of Naruto, as a member of the Hyuga branch family, his achievements are mediocre due to the limitations of his bloodline. In order to continue to improve, he has no choice but to make enemies with the whole world.

Naruto Hakuha: It's not me who's wrong, it's this world.

In the world of Under One Person, in order to collect the eight unique skills, he becomes enemies with all aliens.

A man named Bai Yu said: Hundreds of years ago, our ancestor Jiazi wiped out the demons and killed all the evil spirits so that they dared not show their heads again. Today, I want to follow his example. Those who are my enemies are all demons.

In the Marvel world, he is the commissioner of the New York Police Department. He is a good official who reassures the people of New York, but a nightmare for the farmers.

Marvel White Feather: You idiots need to be electrocuted.

In the DC world, he is a doctor and a hero, starting from the "Boys", and finally breaking through the dimensional wall and entering the DC world.

DC Bai Yu: Power without legal constraints is not enough. Superman has no law enforcement power, and Batman is even more disregarding of human life...

Naruto, Under One Person, Marvel, DC, Fox Demon, Corpse Brother, Calabash Brothers, Primordial Era, Journey to the West, Dragon Ball...

Crossing over, but splitting.

My soul split into five parts.

...

Awakening the martial soul, coming to the gray fog space.

"This feeling?"

"Could it be the Nine-Nine Flow? Hahahaha, the small Douluo world, isn't it easy to get!"

"Quick! Share your abilities with me, I want..."

"What? You are also in Douluo?!"

Wait!

Why do you four have no worries about food and clothing? But I am a slave!

Five people are divided into five parties, Haotian Sect, Qibao, Landian, Wuhun Hall, Zhu family slaves, one for each person hehehe...

Transmigrating to a crossover anime world, Rosser finds himself a demon hunter, his landlord is Kayako, and his neighbor is Yotsuya Miko... Is Conan a mystery with an instant-death rule? Help! Where's the Counter Force? Where are the Heroic Spirits? Oh, they're just standing by and watching me die. What, I have a cheat code? But then again, you can only rely on yourself. I'm going to create... a new type of Moon! First, I'll transform into the Abyss Eye White Dragon, create a WarGreymon to give the world a little dragon-related shock, and you'll see, isn't that a dragon? Then I'll create a Five Holy Grail War world, making all the exaggerated descriptions come true, connecting it to the FGO world next door, shifting the blame, and whoever loses becomes a Lostbelt. Type-Moon people: Stop!! And then... Saber: You're Arthur too? What do you mean by "the strongest because the strongest is the strongest"? Goetia: Your Beast Law... wait, what the heck is the Law of Cycles? Gudako: Mashu, could it be that our world is the Lostbelt? Kazuma and Ayanokouji: Commander Rosser is my sun, ah, praise the sun. Poor Xiangzi: Mr. Rosser, a maid's duties don't include anything else~ Tokisaki Kurumi: You scumbag god, watch me exhaust you with my three thousand clones! Also known as "The Birth Diary of the Servant Universe" and "Slaanesh's Daily Life of Having Fun".

A crossover anime/manga series, starting with Overlord. Vio Helias is reborn as the son of the White Dragon King who rules over frost. Looking at his arrogant dragon father and incompetent dragon brother, only one unwavering thought remains in his mind: He refuses to grovel before Ainz Ooal Gown and become his servant; he must shoulder the glory of the dragon race and bring this world under their protection once more. —Early episodes focus on Ainz Ooal Gown; later episodes will include Strike the Blood, Godkiller, High School DxD, etc.