Бесполезная регрессия

An ordinary middle schooler, Lee Seong-Min, is summoned to a world called "Eria". He endures dozens of years with no skills or powers, and makes it through all kinds of hardships to survive, but dies miserably in the end. However, before he dies, he gets sent back to the past after obtaining the ‘Stone of the Past Life’ by chance, and gains the opportunity to start his life anew. Yet, he still lives a life without any talents; nothing. Although he can’t approach the powerful people around him due to the "wall" surrounding them, he moves forward step by step with firm determination, never giving up. "No matter what, I’m going to live a better life than my previous one even if I have to struggle!" (Source: KakaoPage, translated)