“Huh? You’re already 27 years old”. The Saint Marialite’s engagement with the crown prince was called off because of her age! Due to various circumstances, the level-headed Marialite acknowledges this and returns to her hometown. However, she encounters a child raised in secret…? What's more, after growing up in a short amount of time, he falls for Marialite, and wants to take her back to his own country! A romantic fantasy story about a level-headed saint who gets dumped for being in her late twenties and ends up living with the demon prince instead! The adored fantasy's long awaited serialization!