[Invincible + Single Female Lead + Slice of Life + Slow Burn + Pure Romance]

Su Ran cultivated diligently for half his life, ascending to the unprecedented terrestrial immortal realm of the Cangyun Continent, all for the sake of avenging the annihilation of his clan.

As a result, he got carried away in the fighting and ended up killing himself to join his deceased relatives.

Unexpectedly, when he opened his eyes again, he found that he was not dead but had arrived in a completely unfamiliar world.

Their story begins after they rescue a girl who looks remarkably like their sister.

This book includes, but is not limited to, romance, slice-of-life, history, battles, fantasy, science fiction, technology, nuclear fusion, and physics (although these haven't actually been covered yet; in short, this is just a preliminary outline).

The Immortal Emperor has returned, his cultivation intact, invincible and overwhelming. In his previous life, he was cowardly and incompetent, watching his family fall apart, his mother die prematurely from overwork, and his sister suffer bullying, all while he was powerless to do anything. Those who once despised and insulted him now stand tall, a height he needs to look up to. In this life, now that he has returned, his cultivation intact, all of this will be rewritten. He will personally atone for those regrets and settle those grudges.