The Demon King's Order: Dote on the Useless and Crazy Concubine

Xia Xiyan, a top student at Modern Medical College and a feared killer, died during a mission and traveled back to the body of the wasted legitimate daughter of the General's Mansion in Michu Continent. When he opened his eyes again, he obtained a contract with ancient divine power to avenge his mother, but his life experience was unclear. In order to find his relatives, he traveled across the continent and embarked on the path of becoming a strong man. Until the evil forces harm the people they care about, their anger breaks the sky, and then they become angry again...