Whether you are searching for Greatest Boss System Chapter 58 you've come to the right place. Greatest Boss System , it is a Manga/Manhwa/Manhua translated in English, written by Feng Qi Yue This Comic is About 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”.