I, an Earthly Immortal, am Lazing Around Again Today

[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).