Harry Potter: I will change everything!

To survive in the court of the Supreme Lord of the Ra System, you need to be either Varys or Littlefinger, and this is the minimum threshold required for survival. But what if you're more of an engineer than a political manipulator? If the answer is correct, it's better to stay away from the throne, be the governor of a distant planet, mine the nakwadah and live happily ever after. Using his after-knowledge to destroy the Goa'uld regime, which only prevents the galaxy from coming to greatness. I am not the author of this wonderful work, I will post a link to the original. https://author.today/work/442308

Kai woke up in the Naruto world, but he wasn't a hero. He was just a regular Uchiha, stuck in the middle of a huge war. The Fourth Hokage was about to arrive, and things were getting dangerous. Suddenly, a voice boomed in his head, "Ding! One-Click Max Level System activated!" Kai was confused, but then he realized he could learn any jutsu he wanted, instantly! "Great Fireball Technique? Done! Max level!" He blasted a giant fireball with ease. "Shadow Clones? Done! Max level!" He was surrounded by dozens of his own copies. "Sharingan? Done! Max level!" He could see everything in slow motion, and his eyes glowed with power. "Sage Mode? Only one in ten thousand can learn it? Done! Max level!" Kai was unstoppable. He could learn any jutsu, no matter how difficult. The war was about to get a whole lot more interesting.

On an ordinary day, an inventory livestream descended upon the dimensional multiverse. Those who were selected all had a faint blue light screen appear before them. Immediately after, large characters appeared in front of them. 《 Dimensional World Inventory — Top 10 Famous Scenes 》  Scene 1: One person, one sword, guarding a city, battling seventy thousand... Scene ***: The man who almost kicked out the grand finale, Eight Gates Formation! Might Guy! Scene ***: Menma, I found you! Scene ***: ..... As one scene after another of regretful characters appeared, everyone watching the scenes shed tears. Monkey D. Luffy: That's amazing, one person, one sword, not only fought against seventy thousand people, but also returned alive? Uzumaki Naruto: I didn't expect that seemingly ordinary guy to be so powerful! Uchiha Sasuke: The one who made the final save was actually you. Jinta Yadomi: Menma, we found you~ Everyone: Menma, we found you~ Honma Meiko "Menma": Hi! I've been found! Updates Schedule: 2 chapters every T/TH @11am GMT+08 If you want to support me and want advanced access to up to 10 chapters, you can check it @patreon.com/Icedrone

She was born to destroy demons. He was born to challenge the god realms. As an Eternal, Kelsey was raised to hate—and ultimately wipe out demon clans. However, a powerful spell seals away her memories and godly strength. Lost and unaware of her true identity, she lives among demons… only to find herself trapped in a terrifying marriage she never chose. Luca is a calamity given form—a mixed-blood demon king, a dragon of annihilation to gods and mortals alike. Yet before his new bride, he is unexpectedly gentle, attentive… and devastatingly handsome. But their love is doomed. For Kelsey’s blood belongs to the god clans, sworn enemies of demons. And when her sealed memories begin to awaken, a voice commands her to kill her husband. As gods conspire, demon factions’ rebel, and long-buried truths about their origins come to light, Kelsey and Luca are forced to confront their fated destiny. Will love overcome destiny? And when the truth of their origins is revealed, what choice will they make?

In a world where power decides everything, one name brings fear to even the strongest warriors… the Demon Lord. But what if the Demon Lord wasn’t truly a monster? Asad wakes up in a strange body, surrounded by darkness and whispers calling him “Demon Lord.” With no clear memories of his past, he is forced to accept a truth he doesn’t understand… he is now the most feared existence alive. Hunted by heroes, betrayed by shadows, and haunted by fragments of a forgotten past, Asad must uncover the truth behind his identity. Is he truly the Demon Lord… or just a pawn in a far greater game? As the world prepares for war, one question remains— Will he destroy the world… or save it?

Ren reincarnates into One Piece with a mind that shouldn’t exist— a superbrain born from an accident. He wants peace. But his inventions… won’t let the world stay the same. A single choice begins a quiet revolution.

With cold determination and overwhelming dominance, Shinji crushes pirates, rivals, and even legends of the sea. His justice is not gentle—it is absolute. Garp: “Kid, let’s see how far you can go… and how long your fists can endure!” Sengoku: “I support Shinji to become the Marshal of the New Navy Headquarters!” Sakazuki: “You may have defeated me… but will your justice prevail?” Kong: “I’ve given you this seat. Tell me… can you hold onto it?” Dragon: “Your ambition is too great. You might become the next ruler of the world.” Blackbeard: “Damn it… why won’t you die?!” Shanks: “That level of Haki… I’d call it the strongest.” Luffy: “Navy King?! I’m gonna surpass you!” The Five Elders: “Kneel… before our king!” … And when Im finally rises from the Empty Throne— The boy who once struggled to survive has already become a king.

Ryuji a normal guy from Earth, traveled in the world of Demon Slayer, equipped with Hyper-Dimensional System. In his first day he was given a contract with a demon spirit. [Starting Bonus Issued: Demon Slayer Sword x1; Demon Spirit Contract Signed, Obtaining Demon Spirit Devourer] His abilities allow him to consume demons, opening up the path filled with possibilities and challenges for him.

“In this world, your ranking isn’t just a number. It’s your status. It’s your life expectancy.” Lucius was ranked #5 in the world, the most qualified candidate to become a god. Yet betrayal knows no bounds. Murdered by his best friend and his fiancée, his soul is cast into the body of a crippled young man with the lowest ranking in history. [Last.] Rejected and cast aside by his family because of his inability to use magic, Lucius finds himself in a familiar setting, yet covered in life-threatening wounds and with only a limited time left to live. However, fate had a different plan for him. Lucius acquired an unprecedented ability. [Mana Symbiosis] Everyone sees him as a flawed F-Rank who’s bound to die soon, but his ability allows him to fuse spells in creative ways. In a world where magic comes pre-shaped, creating your own magic was impossible. “If the system says I’m the Last, then I’ll have to break it.”