魔道祖师 [Mó Dào Zǔ Shī] Series by Mò Xiāng Tóng Xiù

Wei Wuxian was once one of the most outstanding men of his generation, a talented and clever young cultivator who harnessed martial arts, knowledge, and spirituality into powerful abilities. But when the horrors of war led him to seek a new power through demonic cultivation, the world's respect for his skills turned to fear, and his eventual death was celebrated throughout the land... moreWei Wuxian was once one of the most outstanding men of his generation, a talented and clever young cultivator who harnessed martial arts, knowledge, and spirituality into powerful abilities. But when the horrors of war led him to seek a new power through demonic cultivation, the world's respect for his skills turned to fear, and his eventual death was celebrated throughout the land. Years later, he awakens in the body of an aggrieved young man who sacrifices his soul so that Wei Wuxian can exact revenge on his behalf. Though granted a second life, Wei Wuxian is not free from his first, nor the mysteries that appear before him now. Yet this time, he'll face it all with the righteous and esteemed Lan Wangji at his side, another powerful cultivator whose unwavering dedication and shared memories of their past will help shine a light on the dark truths that surround them. less

Shoot Down the Sun. The bloody war against the We Clan once led Wei Wuxian to seek power in demonic cultivation, and the dark acts he committed drove a wedge between him and Lan Wangji. Now, those old sins come back to haunt him as his reincarnated identity is revealed to the cultivation world. But even as the other clans call for Wei Wuxian’s death, Lan Wangji stands by him, making Wei Wuxian realize what he took for disapproval in the past might have been a much deeper emotion.