The hardworking daughter of a marquess, once overlooked, learns her true value through love. Sophia, the diligent daughter of a marquess, is engaged to the second prince, Delm. Both serve at the Royal Magic Research Institute, but as his fiancee, Sophia is forced to shoulder his work. When she invents a new form of magic, Delm steals her research and registers it under his own name. When she demands it back, he refuses and even accuses her of lying. Hailed as a genius, Delm basks in glory while Sophia is cast away. Stripped of her reputation, her laboratory, and her engagement, she returns home in despair. Then fate takes an unexpected turn as Sophia becomes engaged to Leo Santorina, the prime minister feared as the “Icewolf Chancellor.” Yet behind his cold title lies a kind, gentle man. Cherished and supported by him, Sophia begins to bloom, proving her brilliance while the man who betrayed her faces his downfall. *Source: MangaPlaza*

He's lazy, arrogant, and a total scumbag, but his potential is the strongest in the world?! One day, the protagonist reincarnates as "Shin Darkside", a villain noble from a game he was super into. A life full of ruin flags drives the protagonist into despair, but it turns out Shin has the cheat skill [Gluttonous Demon King], a mighty power which lets him devour other's magic and skills to turn them into his own! "If I train this skill to break its limit, maybe I can escape these ruin flags?" With the knowledge of the original story from his past life and the Gluttony Demon King skill, Shin tries to defy his doomed future! Without realizing it, he starts acting like a main character... and before long, cute heroines from the original story and powerful allies who admire the former tyrant Lord Shin start gathering at his side...?!

Anthology of D.Gray-man doujinshi written by different artists. Pairings: Allen x Kanda, Kanda x Allen

"You don't find me attractive? Then let's break off our engagement." So said Serena, the daughter of a marquis, to Elliot, her childhood fiancé. He repeatedly broke his promise to escort Serena, and when he showed up to a party with Maribel, the daughter of a duke, who was seducing someone else's fiancé, she finally snapped! After breaking off their engagement, Serena was able to fully enjoy the fashion she had been holding back on, and she began to rediscover her true self - her narcissistic and slightly bad-tempered self. Then, the second prince, Nox, who is known for hating women, suddenly proposed to Serena -!? (Source: Futabasha, translated)