I Ended up as the Hero’s Mother After Reincarnating?!

Description: The prequel to the oneshot. The second daughter of a noble, Ria was taken away on her 11th birthday by the King who fell in love with her at first sight. From then on, she had to accompany the King both in the day and at night and resulted in her pregnancy. The Queen became jealous and had her chased out of the castle. Left without a choice, she had to raise the child on her own, the child who later became the Hero. However, she has a rather strange secret and that is………