The World is Being Transformed

The protagonist travels back to the beginning of the creation of the world. At first, there were no sun, moon, stars, mountains, rivers, and vegetation. But God began to add things to the world little by little, such as sky, earth, sun, moon, stars, mountains, rivers, vegetation, herbivores, carnivores... The world was not built in six days as mentioned in the Bible, nor was it completed in one go. Instead, it underwent transformation, testing, and adjustment again and again. In the process, the protagonist used bugs to become stronger. Three hundred years later, the world was finally transformed, and the protagonist was already three hundred years ahead of the world.