Greatest Boss SystemZuÌ QiÁNg Boss XÌTǒng ; 最强boss系统

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”.