Senior Sister, I Really Am Not a Demon Cultivator.

Countless civilizations are hidden in the heavens and the world, and the moment darkness falls, all worlds will be annihilated. The protagonist is a native of the Cultivation Planet. He has no time travel and no modern memory. He was taken away the day his parents died. The whole world changed the moment he started practicing cultivation. This is a story that reveals a new world from an indigenous perspective.