The Conquerors Path - Chapter 10: Changes

Roy’s life was nothing special. The only thing commendable was the last few moments when he saved a mother and her child from a drunk driver.
…
It’s really an egg! Damn it, what kind of monster have I become? Did I fall into Hell instead of making it to Heaven??
Join Roy as he ventures through various worlds with the Custom Made Demon King System—a system that allows Roy to draw anything he can imagine and create it through exchanging souls!

On the will left behind by the 14 year old suicide victim K:

“Taku Sugawara is the devil. Nobody should believe his words.”

Bluestar 2100, the global land resources are exhausted. Food crisis is coming! For the few available land, the cloud of war shrouded the entire Blue Star! However, at this moment, the National Farm suddenly came! Everyone thought that Blue Star was saved.

However, in the farm, danger is looming! In just one month, the vast majority of people in Daxia have been eliminated from the farm space! Only Su Chen is left! Countless Daxia people fell into despair.

At this moment, a voice suddenly sounded in Su Chen’s mind. Ding your infinite synthesis system activated! Please pay attention to check! ! …

- Description from novelbuddy

This is a tale that distorts the scenario of an otome game.An orphan girl named Alicia is attacked by a woman trying to steal her body to become the “heroine”. From the fragmentary knowledge she acquires, Alicia learns that this world is the stage of an “otome game” in a “world of sword and magic”.Having learned the truth from the knowledge she obtained, the immature Alicia dismisses the otome game as “nonsense” and runs away from the orphanage to escape the fate of the “heroine”.A villainess aims to take her life. A fake heroine appears. Alicia trains herself using the fragmentary knowledge she has gained in order to survive, growing into the “Strongest Assassin” that is feared by both the Thieves’ Guild and the Assassins’ Guild.