One Piece: Seaside System - Chapter 3: Marine Based -

He became Arthur. He lived his life as Arthur and claimed Excalibur.Now, he has returned with a purpose.Beneath the surface of the world lies a twisted world known as the veil—an dimension where monsters are born from corrupted human emotions and desire. The deeper you go, the more terrifying they become.Each Layer is sealed. Each hides a god-like being, waiting to rise to the surface.Now, Sylas bears the responsibility of keeping the gate between both worlds from breaking.[Keys are passed down through generations.No one knows where they came from, but those keys can open doors to another world — a world filled with deadly trials. If you complete the trial, you return with blessings from gods, mythical beasts, and ancient warriors. The amount of blessings you earn depends on how well you perform.But if you fail, the door shatters… and you are gone forever.If you survive, you are given a permanent rank — a rank that decides your place in society for the rest of your life.]

Li Xuehao found a secret of monasticism in the cover of the genealogy. After spending ten years, he finally succeeded in building the foundation. Unexpectedly, he was eager to get rid of the evil spirits. After his death, he was born again in Yokohama, Japan, and was attached to Sakura, Tsurumi. The story of the high school student Gao Zhonghao in the college, the story begins here…

- Description from Shubaow (Translated)

Ernest Quelt, the alchemist renowned for his unparalleled mastery of alchemy, has perished.But his death wasn't a noble sacrifice in battle, nor the result of a failed expedition—it was a betrayal. The very comrades he trusted most turned on him, driven by envy of his growing power.Yet fate wasn’t entirely cruel. With his final breath, Ernest's gaze fell upon the tube that contained his greatest achievement: a perfect artificial being known as the Homunculus.More than just a vessel resembling a human, this creation harbored the power of a catastrophic beast—one that had once nearly brought the world to ruin.

I do not own anything from Marvel or Naruto. I just enjoy both universes.So content warning first, this is a fanfic of hot steaming garbage. I hope you enjoy it. I will most likely put in bad words, fights, gore and maybe some smut. Or maybe I won’t, we will see how this goes. This story is my attempt to write some fanfiction that I won’t hate, which is still up for debate.------------------------------Let us follow the MC as he is pushed into the world of Marvel with his own special super power made up from the world of Naruto. This will be close to the MCU, but let's call it Earth-199999-AU. AU is for the author's universe. MCU, check. X-Men, check. Doom and the fan-4? Double check. Other stuff from comics, also check. From Naruto, eye powers? At some point, so check. Tailed beasts and summons? Nope. Chakra and ninja powers? Check and check.------------------------------At least one chapter will be posted weekly, possibly more if I write enough.This is posted on RoyalRoad, Scribble Hub, Fanfiction and now Webnovel.I also now have a p@treon set up under Pewpewcachoo go check it out if you want.