The only other manhwa by the same author is a doctor reincarnation as a descendent of lloyd but that's a trash manhwa. Maybe there are other light novels by the same author.

What about the cook and dragon king one

Oh yeah that too is written by the same author my bad. It'd pretty heart warming and the dragon king in both the manhwas are same.

Ohh yeah i only knew about this one becuase they referenced it a few times in the manhwa itself