Well, just the tittle said he did accidentally mutated the world. At first he find a way to get stronger to protect himself from potential danger. Buying this and that. Later he knows how to get energy point and a thing came out after killing ghost.

He did search to internet and he did see some people recruiting super human but he didn't join because he didn't want to be taken advantage of. That kind of thing. He stubborn do it himself. Even if he don't have enough money.

Maybe he have a point. Why join to this group if a day or a week you become stronger than them? Or what if some push him to death? Well, he have a point.

Still I don't know if this novel become good later since this is the beginning of his journey. Hope he don't become s*upid later.