Hoarding in Hell

In a world of monsters and hunters. our MC, who is still not awaken, dream of becoming strong. He spends his days collecting mana Crystals in a suit, so he wouldn't get infected by the mana that resides in the sawage. Mc is a orphan who believe he don't have parents, However one day a lawyer came to MC with a return stone which is said to be gift from his dead "father". Somehow the return stone teleported him in the future ruined city with the words Difficulty: Hell in front of him. Has he still weak, he dies countless numbers of times, but with the system assisting him he survives each time. As he continues to die, he grows stronger and stronger.

So far it is interesting, if you like MC who get weak to overpowered, then it probably for you.