Bound to My Nth System [Quick Transmigration]

Top-Obsessed / Weak-Top-Leaning / Irresistible Top / Brain-Off Fun / CP System * Synopsis: There really is someone in the world who can adapt to any System. Whether it's a traditional conquest System, an emotion-point collection System, or a tycoon System, or more unusual ones like an intimacy-point System or an ex-boyfriend System, he can handle them all with ease. Every mission looks effortless to complete. That person is Gu Tang. World One: Spiritual Qi Revival + Best Friend System World Two: Modern Day + Cashback System World Three: Ancient Times + Anti-Trope System World Four: Slacker Cannon Fodder + Automatic Cultivation System World Five: Infinite Flow + Affection-Point Collection System Theme: Become the light, and spread it.