Creation System: Reborn As A Fantasy Worldsmith - Chapter 236 The Auction Begins

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?

The first time she married him, he blew her head off with a gun.The second time she married him, she became a woman with the intelligence of a 5-year-old.To survive, she decisively slapped down a divorce agreement to humiliate him severely, and then... was pinned against the corner of the wall.Shi Lingyan hooked her leg and squinted his eyes, “You think I can't recognize you just because you changed your face?”Thus, she was pressed into marrying him for the third time _(:3」∠)_Mr. Shi said, “To love your wife is to pamper her as if she's intellectually disabled.”Shi Mei: “I knock your mom!”[Rebirth] Pretend Idiot VS Genuine Schemer

Ji Huan’s parents both died in a traffic accident.
Unexpectedly, his older sister also meets the same fate.
Yet everything starts when he says “goodbye” for the last time.

Hunting monsters? Genetic comparison?
Ji Huan flees with his older sister’s posthumous child to his hometown, Bade Town.
The three Grandpa, grandson, and nephew all live interdependent days.
However, inside the swaddling clothes is not a human baby,
But a monster…

Black egg body, white ring eyes, red mouth.
A child, ah! Doesn’t he have two eyes and a mouth! Resembling an egg, he is Ji Huan’s cute nephew!

Vermilion tiled wall, white lotus pond, convalescent courtyard.
This entirely neatly handsome and elegant young man: Ah Jin.
However, he told Ji Huan about the secrets of the monsters and discreetly taught him.
Bade Town is also slowly being covered in monsters…

Or, the record of a small countryside monster’s growth.

- Description from Novelupdates

Qin Chuan arrived in a parallel world and got bound to a system.