Good-For-Nothing Saint: the Sick and Weak Proton Depends on Me

The modern killer Fu Bai fell off a cliff with his sister Fu Liu who grew up together, but accidentally traveled through time? Before he could figure out the situation, a national master suddenly walked out and said he was the body of doom? Being thrown off the cliff again, only to wake up as the useless saint of Qinglong Kingdom? The unique black spirit bead, the mysterious contract beast, it turns out that everything has been destined...