The "Infertile" Princess's Twins

Elena, the eldest daughter of the count's household, had her stepmother forge a "permanently infertile" medical record and was publicly broken up with by her fiancé. While drunk, she accidentally had a one-night stand with Crown Prince Adrian of the empire — and miraculously became pregnant with twins! The vicious stepmother, coveting her birth mother's estate, tried to sell the pregnant Elena to an abusive old baron. At the critical moment, the crown prince led three thousand cavalry to blast through the old castle, forcefully rescued his princess, and declared to the world: what she carried in her womb was the empire's most sacred, pureblood lineage!