Sakura-chan

I read this a few years back so I don’t remember much

Basically, the mc has some kind of creation magic which becomes sought out by the kingdom when a princess stumbles upon him. I believe he has what’s called black magic...And he becomes the kingdoms guardian bc of it. I don’t remember whether or not he’s reincarnated ╥﹏╥

This manga is about a princess who’s the sole survivor of the royal family. Basically, she’s in hiding as the maid of the new royals and has the ability to do anything like cook or play music with the help of....ghosts??? Anyways, she got this ability from an old man in jail that she helped out.

Sorry for the terrible description!!!
If ya guys know it pls let me know (⌒▽⌒)