I choose a C ranked hero in another world, I was mocked online - Chapter 167: You Killed the Wrong Person! The Real Powerhouse Is...

Calamity descends upon a a tranquil world in the black of night, transforming it into a death game! This a a true apocalypse, but this is not the end of humanity!

- Description from Novelupdates

[Please select your difficulty. Choose very carefully, as it will determine everything.][Easy] [Normal] [Hard] [Nightmare] [Hell]“Hell, obviously!”------------Sam Walker, an average office worker, transmigrates into the world of the game he hates the most: [Forsakened].In this world, the apocalypse descended on Earth and merged with the [Forsaken] realm.The select few chosen, known as Awakeners, could explore this realm to gain tremendous strength and treasures.Sam didn't have any expectations, but surprisingly, he unlocked an SSS-Rank Class.[Primordial.]Alongside his class, Sam unlocked a unique skill that allowed all of his skills to evolve infinitely.“If this game truly wants me dead in this difficulty... then I'll fight back with everything I have!”...[You have evolved “Master Sword Technique” into “Primordial Sword Technique”][You have evolved “Fire Meteor” into “Supernova”][You have evolved “Powerful Shield” into “Ultimate Barrier”]...Nothing could stop him now.

A teenager who unexpectedly gets transported to the modern world from ‘the world of the immortals’ . He finds himself in the body of an ordinary guy. He wants to go back to his world and for that, he will have to practice to get stronger and investigate the reason why and how he crossed through to this world.

- Description from Novelupdates

This was a fragmented and disorganized world, this was a place that had been forgotten.