Manga Kill The Hero

By a cruel joke of fate, the whole world has turned into a field for play. Suddenly, monsters appeared in ordinary human cities, but to equalize the chances, people had divine powers that allowed them to fight the monsters. Se-Joon-Li leads an organization that is engaged in the fight against monsters, he agitated all people to fight, and people united under his banner. I also joined him. However, as it turned out, he was not a real hero. He cunningly planned to seize power over the entire world. Before my death, I heard from him that I had served him well, and thanks to me, he was able to achieve his goals. While I was dying, I realized that it was he who pierced me with the blade. But suddenly I woke up in the past, long before I became a player in this world of battles. Now I will be able to avenge his betrayal!