Am I crazy or was there another version of this story out there???

Maybe this?

http://www.mangago.zone/read-manga/sincerely_i_became_a_duke_s_maid/

Almost the same criteria with the ML.

I can’t remember fully cause it’s been awhile but the story line was completely the same and the art was a little different and I can sort of remember what happens next with the king coming back