Hei Yuan Liming Shi

The world has been plagued by monsters ever since the appearance of an inter-dimensional portal called the “Dark Abyss.” Special mages, known as portal protectors, must fight to keep the Dark Abyss under control. Among them, Baiyu is undoubtedly the strongest, and he full well knows it. But his arrogant personality gets the better of him when he jumps into battle one day unprepared for his hardest opponent yet, which then results in his untimely death. Things aren’t completely over though, as he is reincarnated two years later into the body of a teen boy. And with the special power of the gods bestowed to him in this life, will Baiyu finally be able to save the world from falling into darkness? (Source: Tappytoon)