The fate of the hero of the game Idle Isekai: An Idle RPG named Isekai had a difficult test. He has to either save the world or destroy it completely. Naturally, you will help him do good deeds, although this is not easy. The guy will have to fight various monsters, which the darkness endlessly generates. As he fights off waves of attacks, his appearance will gradually change. He will receive new abilities, including magical ones. They will greatly help him cope with the next raids. And there will be more and more enemies, so the level of the hero must also grow relentlessly in Idle Isekai: An Idle RPG.