(Comprehensive anime + multiple heroines + plagiarism, Oregairu, The Heroine of Nowhere, Kaguya-sama: Love is War, Lonely Rock, I Can See, Kashi-sama, Can’t Study Together, The Quintessential Quintuplets...)

What should I do if I travel through time and space and become a fat otaku?

Masao Tanaka was extremely desperate. He had traveled through time. It would have been fine if his name and family were strangers, and it would have been fine if he hadn't been given a handsome face.

But why did he become a typical fat otaku like someone from an anime?

Fortunately, there is a system, but why is this system called the [Degenerate System]?

······

Yukinoshita Yukino: "It's really uncomfortable to be with Tanaka Jun."

Ying Lili: "You are a guy whose head is full of pornographic garbage. Come up with a new plot for me!"

Kasumigaoka Utaha: "I never thought that the person who wrote such a sweet novel would be you, Fat Otaku."

Yotsuya Miko: "Tanaka, help me, just destroy the evil spirits and let me..."

Fujiwara Chika: "Tanaka is really cute."

Goto Ichiri: "Tanaka, best friend."

······

He was transported to Japan in 1912, only to discover that this bizarre world was inhabited by yokai (supernatural beings), and that as a samurai, he had an obligation to slay them? Fortunately, despite this hellish start, Taira no Harunobu awakened a system that allowed him to draw unique sword techniques and items from various works by training disciples! Under his careful tutelage, the older sister next door learned Thunder Breathing and Lightning Return, becoming the Inari Soul Sword Saint; the little girl who used to roam the streets mastered Laurent's Mind's Eye Blade, becoming a peerless swordswoman with every strike finding its opening; and the noblewoman lawyer was inspired by the Ashina style, mastering the profound principle that everything can be a sword… Huh? Why are there only girls in the dojo? Nonsense! Isn't he a man?! — So said Taira no Harunobu, the Swift Wind Swordsman, the Eternal Sword Saint, and the Guardian of the Samurai Clan.

Long-range weapons are guaranteed to hit, like a lock-on cheat. Gatling gun in action, how about a precise barrage? A wall of sighs, anyone? Sword energy is fired, then curves back to hit again. One moment an S-shaped trajectory, the next a B-class trajectory. The enemy is speechless. Damn it, this is insulting! A humanoid self-propelled turret, a humanoid self-propelled nuke. Evil spirit: Dude, you're the really evil one.

Academy City. A magical city with a population of 2.3 million, filled with countless individuals possessing extraordinary abilities. Standing at the pinnacle of that city are true monsters. The first, Accelerator. The pinnacle of existence, possessing the strongest and most evil ability to truly control the direction of all energy, the strongest and most all-powerful monster in Academy City. He will face encounters with countless worlds that transcend time and dimensions. This is a world where countless imaginative beings converge, a world of magic, a world of technology, and all sorts of people and things will mingle within it. And then, the first will experience all of this firsthand. "—Interesting, then let me see how your so-called justice actually works, heroes?" Accelerator, who has degraded himself to a villain, the most vicious and evil anti-hero, what kind of encounters will he encounter on this journey beyond dimensions? The strongest and most evil one-way dark hero awakens here. A crossover anime/manga fanfiction, the protagonist is Accelerator from the original work, striving to recreate the feel of the original A Certain Magical Index.

Beneath this world exist beings called "Monsters," rampaging, roaring, destroying, and breeding despair. And these dangerous things are spreading towards another world. The Demon King no longer fears the sun, the Honkai creates Herrschers beyond their capabilities, the Abyss begins to overturn the laws of nature, and the Witch attempts to devour the Law of the Rings… This situation seems to indicate that the world is gradually heading towards destruction. But! "Who is the one who bears all despair, brings the light of hope with a body of despair, saves countless worlds, and steals the hearts of countless beautiful girls, leaving them unable to forget her?" "That's right! It's me!!!" Miss Black Hope declared. This book is also known as "Clearly a Humanoid Monster Defined as an Ultra-Ultra-Ultra-Dangerous Containment Object, Yet Too Silly" and "Monsters Should Be Scary? Murderous? No! I Want to Create Trouble! I Want to Cause Trouble!" PS: New book uploaded, please support with all kinds of votes. PS: Two older books are already completed, one of which is three million words long. Updates are guaranteed, feel free to collect and read.

[Farming + Behind-the-Scenes + Development + System + Ensemble Cast + No Female Lead]

Lynn transmigrates to the continent of Bromley, which has been ravaged by the Undead Cataclysm.

It became an abandoned Gothic church.

A group of refugees who arrived by chance became his first followers.

Blessed with holy light, expanding the territory, resisting disasters, becoming the true God.

Lynn also successfully activated his cheat code—the God-level Sanctuary.

[The system detected that one hundred ghouls have been eliminated by the host's followers. Reward: The Holy Sword – Durandal!]

“This sword is just right for Liz. As a Holy Knight, she needs a sharp weapon to cut away the filth for me.”

[Host successfully defended the sanctuary and slew a Tier 3 lich. Reward: Divine spell - Divine Grace Codex.]

"Oh, perhaps I need a priest who can chant my name and bring hope to the lost sheep."

that's all.

Lynn Church became the only refuge in the darkness.

The most indestructible land of hope on the continent of Bromley!

Qin Zichu never imagined he would receive a series of fraudulent messages from "Qin Shi Huang" and "people from the future." One day, he suddenly discovered he possessed a miraculous ability. In his dreams, he could travel back to a specific day in the past, where he encountered a mysterious girl trapped in that same day for an indeterminate amount of time. ...In 1600, John Dee, advisor to the glorious Queen Elizabeth I, obtained the "Book of God's Speech," which contained 49 charts known as the "Great Charts." The first chart was attributed to Christ, the first 18 represented the first six days of creation, and the last 30 represented the "Thirty Heavens" on the seventh day of creation, when God visited Earth. In 1888, the secret society "Golden Dawn" was founded, redrawing the "Great Charts" in an attempt to glimpse the secrets of "God." In 202X, Qin Zichu believed he might become one of them...

Eden traveled through time, but he wasn't at all worried. He inherited not only Kryptonian abilities, but also those of the D-Force. Therefore, he wasn't afraid of kryptonite or sound waves. It wasn't until Eden realized he wasn't in the DC Universe. "My father isn't Clark Kent, right? But why isn't my mother Lois, but some Nolan Grayson? And what's with this monkey-like Justice League?" Indeed, Eden wasn't in the DC Universe, but in the "Invincible" world of IMAGE. But that wasn't important. What mattered was that Eden was not only a Kryptonian-D-Force hybrid, but also possessed a system intent on turning him into a villain. That system was supposedly created by OBA. Well, Eden was pure ol' good food. In response, Eden said, "So I'm not a good guy, but a villain? Doesn't a Superman-esque scoundrel become Homelander? How can I, Superman's son, be Homelander?" The system responded, "Host, be humble! You've surpassed Homelander and evolved into an Ancestral Man."

Having transmigrated to the world of Fairy Tail, the protagonist gains the power of words; each letter contains immense strength. B – blaze, F – frozen, P – power… Relying on the abilities granted by words, the protagonist advances on the path to becoming the strongest mage!

When they woke up, more than seven billion people around the world had been thrown onto a barbaric planet!

Modern civilization has vanished; food, order, hope... everything has been reduced to nothing.

Just as humanity was about to degenerate into beasts and fall into eternal darkness—

Liu Yu awakened his talent [Civilization Web], and his voice resounded simultaneously in the minds of over seven billion people:

"Don't give up! We're still alive! I'm Liu Yu, and from this moment on, I will connect everyone!"

You were the first to raise your voice to the world's despairing, igniting a spark of hope for civilization!

You created the "Contribution Points" system, transforming chaotic survivors into highly efficient mission participants!

[You reverse-engineer the power of the mind, creating "An Introduction to Mental Power Meditation," unlocking extraordinary evolution for everyone!]

[You connect with ten thousand powerful beings, gathering the strength of civilization into a single strike; a mortal body becomes comparable to gods!]

[You command "extraordinary engineering," turning mountains and seas into thoroughfares, building a megacity in ten days—your infrastructure prowess has astonished the world!]

Humanity's creed: "The meaning of our existence is to become another torch, illuminating more darkness!"

When alien civilizations contemptuously refer to humanity as "lost lambs," they are facing a super life form with a planet as its body, a network as its brain, and more than seven billion beings sharing the same will!

Years later, facing the ultimate question from the higher-dimensional "watchers".

Liu Yu smiled slightly:

"Report, candidate 'Human Civilization' requests to submit the final answer sheet!"