You Were Supposed to Be a Nobody, So How Did You Become a Legend of the Underworld?

[System + underworld family + one heroine + urban fantasy] As an ordinary university student about to graduate, Liang Jinzhou receives a System. Determined to change his fate, the day before graduation, in front of hundreds of people, he makes a bold move toward Qin Shiyun, the campus beauty and heiress of an underworld family: he slaps her thigh! From that day on: [Unassailable: invincible in close combat!] [Bullet Time: when danger approaches, time slows around you] [I've Seen It All: an intelligence-gathering superpower, the ultimate support skill!] With one superpower after another and rewards from the System, Liang Jinzhou rises to prominence in the underworld, creating one immortal legend after another. Campus beauty Qin Shiyun: “My husband may look like a good-for-nothing, but when it counts, he's incredibly dependable!” The great families: “The Qin family has a son-in-law surnamed Liang. Whatever you do, don't make eye contact with him!” Foreign forces: “That guy surnamed Liang is here! Run!” This book is also known as: “Just Graduated from College, and the System Sent Me Ruling the Underworld,” “Who Let Him Join the Underworld?”, “No Strength, No Business in the Underworld,” “You Want to Compete with My Connections? I Am the Connection!”, “I Told You to Complete an Artistic Task, and You Slapped the Campus Beauty's Thigh?”, “You Call This Monster a Fresh Graduate?”, “In the Name of Superpowers,” “I Confessed to the Campus Beauty from the Start and Got a Superpower That Made Me Bloom with Joy,” and “I Was Supposed to Be a Corporate Drone, So Why Am I the Boss?”