There Is A Huge Problem With My Achievement System - Chapter 675 - : Self-Execution?

Noah, who was obsessed with the game 'Survival of an Extra'.He spent months chasing an elusive alternate ending.During one of his playthroughs, a glitch and a mysterious effect spirals the game into chaos, killing off characters one by one, everyone in the game slowly started to disappear.In the end, He awakened something he shouldn't have known about, his fate ended in one world and began in another world.Awakening as Noctis Nightryn, the Game’s protagonist and a “extra” Character of the unfamiliar world.He now had to find the cause of the bad ending he had triggered and prevent it at all cost, all while seeking an ending of his own to survive.Since the first day, he arrived to the world everything he knew about game started to differ. The main character were not the same as in the game.Noah realized this world was no longer the same game he knew—since his arrival, everything had already began to deviate, forcing him to make decisions he didn't know would lead to.

Yang Yang starved to death once, so after rebirth, he had only one wish: food and clothing.

However, in the blink of an eye, Yang Yang heard his uncle say that he had to cut open his stomach to take out the eggs.

Yang Yang: … I advise you to be kind.

In order to protect himself, Yang Yang found out the identity of the father from the birth center, and he embarked on a road of no return.

Yang Yang: Duke, your family is in my hand.

A young unmarried duke: ? ? ?

- Description from Novelupdates

“You are chosen to be reincarnated in this era.”

A plain high school school boy involved in a truck-kun incident and met a goddess upon waking up.

He was given abilities that he wishes and got reborn as a son of an aristocrat family. To found out that his parents were actually the strongest couple in the continent.

But that's not the thing that he was shocked for. He discovered that both his biological parents were actually women?!

With his cheat skills, he will live his life as much as he pleased and build a nation before he realized it.

Huang Dan’s pain nerve is innately different from the ordinary people. A little tore in his skin can cause him to sweat all over his body painfully to the point of him unable to make a word out.

Somehow, he began to cross world, following Mr. System to do the tasks…

In the first world, Huang Dan realizes what it means to die painfully and to live to die again.

TL’s summary:
MC suddenly transmigrated and is bind to a system, requiring him to solve mysteries. Born with a higher degree of pain sensitivity, he met different people in the different worlds and learns what kind of emotion smiling is.

- Description from Novelupdates