praying that this is not a one shot.

I don't think it is. If it was it would probably contain the emperor and her as the bird in the one chapter

It’s not! There is a novel promotion over here that is super cute too, but apparently they have now started a proper webtoon, in the promo de FL has brown hair, here she has it pink, and the design es different (I stil recommend to check the promo, since is pretty cute)