Save the World. It's Already Dawn, Why Haven't You Run Yet?

Infinite Worlds! The protagonist must transmigrate to one doomed world after another and become its savior. Each time he arrives in a new world, he automatically matches the strongest power level in that world! (Only during the day.) Of course, even if each world has a ceiling for individual strength, saving it is no easy task. After all, many worlds face disasters that no individual can overcome. You'll still need to use your head.