A generation's greatest alchemist is reborn after death in the body of an ordinary man with the same name, and the story begins...
No spiritual roots, so you can't cultivate?
[I have a method I invented myself to awaken spiritual roots.]
Poor spiritual roots mean leveling up too slowly?
[I have my own method for transforming spiritual roots. Rare space roots, or time roots seen only once in ten thousand years, I'll take them all!]
The Demon King wants to marry off his adorable little daughter?
[Uh, she's still too young... I'll keep her by my side and raise her first.]
The Calamity Empress, who has slept for ten thousand years, wants to be my maid?
[That one might be worth considering...]