I Alone Level Up

Introduction to the Work: -Just eat well and live well. Why save the world? A life spent striving but owning nothing. Go Kang-dong meets an unhappy end. And... ding- [A gift has arrived.] He regresses to his middle school days with the invincible (?) ‘Stat Up’ system. He always had to endure in his past life because he was weak. Now, he doesn't have to endure anymore. He resolves to take exhilarating revenge on all those who betrayed his life. Purely for himself, not for others. But... the system, that's the problem. It keeps bothering him, telling him to do things. -I'm busy enough trying to eat well and live well on my own, and now you want me to save the world? It's annoying...