Read manga: In My Death, I Became My Brother's Regret

manga
Summary:

The half-demon, Jing Mo, was killed by his older brother Jue Ming when his demonic energy lost control. He found himself in the body of a young man named "Bai Shu", and this body seemed... abnormal. Due to suspicious circumstances revolving around the disappearance of Jing Mo's body, Jue Ming kept an eye on Jing Mo who desperately hid his true identity. With one of them hiding a secret and the other looking for the truth, the pair landed in the middle of a life-or-death struggle that came with being "Bai Shu"...