The Strongest Immortal Killer in the City

A mysterious beautiful female assassin, a seductive snake demoness, an ordinary poor boy favored by many beauties—is it happiness or misfortune? Nine-turn Golden Immortals, underworld demons, overlords of the demon realm—myths and legends become reality. Adventures, treasure hunting, killing, survival: watch an ordinary young man navigate among these powerful beings from the three realms and win the hearts of all the beauties. — Description from novelcodex.org