My Wife Is The First Female Demon of Eastern Jin

History major Tang Yu dies and transmigrates to Jiankang City during the Eastern Jin Dynasty, becoming a poor scholar. Facing his father's demand that he become a male companion and an assassination attempt by the Demon Sect's Holy Maiden Xi Er, he is forced to marry Xie Qiutong, the most beautiful woman in Jiankang known for her addiction to killing husbands. After joining the Xie family, Tang Yu navigates Xie Qiutong's schemes, Xi Er's threats, and the intrigues of noble families, resolving crises with modern knowledge and building his reputation. He becomes entangled in the struggle between the Wang family and Crown Prince Sima Yuan, exposes the ritual fraud at Zao Kong Mountain, reveals the truth behind the Fangshan hunting massacre, saves the Emperor during the Mid-Autumn Palace Banquet, sheds his status as a son-in-law, and accepts an appointment to Shu County, beginning his path to establish himself in the chaotic times.