The Loss as the Price of First Love

Marquess's daughter Aileen had been engaged to Duke's son Eugréas, whom she had loved since childhood. She grew up like sisters with Eugréas's sister Sasha, but Eugréas's affection was directed toward his real sister Sasha and Carin, whom he met at the academy... This is the story of Aileen's decision to take revenge. ※A Greysia Series story from "So I Lie at the Last," from Aileen's perspective