The Happiness of the Old Miss SaintIki Okure Seijo no Shiawase - Konyaku Hakisareta to Omottara Mazoku no Ouji-sama ni Dekiaisaretemasu!; 行き遅れ聖女の幸せ～婚約破棄されたと思ったら魔族の皇子様に溺愛されてます！; The Saint's Belated Happiness: Newly Single, Now Living with the Demon Prince

Huh? Youre already 27 years old. The Saint Marialights engagement with the crown prince was called off because of her age! Due to various circumstances, the level-headed Marialight acknowledges and returns to her hometown. She encounters a child raised in secret? What's more, after growing up in a short amount of time, he falls for Marialight, 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 fantasys long awaited serialization!