The Lyrical Poem of the Flower Guardian Dragon

This is a story about a haughty princess who, after losing a war, travels with the enemy's second prince, Theobald, while hating each other. These two have terrible personalities at the beginning. However, their relationship drastically changes from the moment they unexpectedly adopt a child. The proud princess, Amapola, cherishes the child and gradually reveals the virtues hidden deep within her heart. Through numerous incidents, they discover each other's good qualities. Eventually, they fall for each other, and it's beautiful. Moon god, demon, dragon. If you like these keywords, I can recommend it.