Why Are You Crying? Because I Married Your Mom After You Broke up with Me? - Chapter 28: Ancient Chinese Medicine?

This is a world where technology and the supernatural exist. There are demonic beasts, wars between species, evolution, and danger everywhere. Fortunately, humans aged between 16 to 18 will have the chance to activate certain genes and become gene warriors.

Gene warriors will enter a wonderous World of Origination and begin their adventure there. They will seek treasure and copy extraordinary genes to gain wondrous strength, becoming the main power against danger.

Lu Yuan transmigrated to this world, bringing with him a cube that can evolve genes without limits.

I woke up with a start.

I have transmigrated, am handsome, and have the golden touch. I am going to win at this! Am I going to be the protagonist?!

I, Lu Yuan, am definitely going to become the pillar of the human race!

What if Midoriya Izuku stayed quirkless? What if he could become a hero without any powers? Or even more shocking—what if he became the successor to All For One?

“Are you my knight?” The silver-haired youth looked at the blonde girl before him and asked, his cheeks flushed red. This was their first encounter when he was only ten years of age.

“Are you my bride?” He held her in his arms, embraced the girl who had accompanied him for ten years straight. He was sixteen years of age.

“Are you my king?” He knelt before the throne, smiling foolishly as he looked at the girl holding the sword victoriously. At this moment, he looked like the boy he was when they first met.

“I’m fine without having eyes for you. The entirety of Camelot is for your taking.” Smiling soft and gently, he gave his eyes to the girl who lost her eyes due to the curse of the red dragon. He doesn’t regret it, he thinks. He was twenty years of age.

“So… Arthur… Artoria Pendragon, are you willing… are you willing to spend the rest of your life with me?” His voice was soft and clear as he reached out to touch her hand.

This was their legend.

- Description from Novelupdates

In the legends that were told, ten thousand years ago the twelve demon kings wreaked havoc upon the world, almost completely destroying it. Ten thousand years later, the late arriving Bella discovered that she had been screwed over by her reincarnation, the ranks of the Saviors are already filled and she has to change teams in order to pass the days. Having her gender changed into a beautiful girl… she endured that, not being able to join the righteous side and obtain cheat abilities… she endured, but what she could not endure, was that the world that she had transmigrated to was toxic beyond belief. No one here does their rightful jobs properly, be they heroes, demon kings, or creator gods… in fact, Bella felt as if they all had also started with the wrong faction!