Duke Julia had memories of doing research at an agricultural university in her previous life.She lived by improving crop varieties in the poor territory she was due to inherit, but the king asked her to become the fiancee of the second prince, Rigras, who was the subject of constant bad rumors.Julia's family, the Duke of Cornelle, was a prestigious family, and was an attractive backing for the two princes competing for the crown prince position.However, at an arranged marriage meeting, Rigras called the chubby Julia a pig, and fortunately the engagement talks fell through.Her relief was short-lived, as then the first prince, Lauren, proposed to her, and as their interests coincided, Julia became Lauren's fiancee...Yulia did not know. In fact, this world was the setting for a certain otome game in her previous life, and she was supposed to become the villainess as the fiancee of the second prince, Rigras.