Greatest Boss System

Explore the captivating world of Greatest Boss System, a captivating manga that masterfully blends Action, Adventure, Fantasy. Created by the talented Feng Qi Yue. Experience this thrilling series for free at MangaPub, where you’ll find a rich collection of manga to explore. With 137 chapters translated into English and more on the horizon, there's never been a better time to start your adventure. Be the first to know—create an account today, bookmark Greatest Boss System and never miss an update!

Who is he? Why is he called the Boss? Maybe he's the fearless ruler of the world. Or maybe the worst enemy of humanity, who tears worlds down. After Su Sin was reborn, he lost all his skills and abilities from former life in a knights' world. However, a newly implanted System can help him restore them. "My name is Su Sin where Sin means Promise keeper".