S-Level Power? I Only Have a C-Level Copy!

I, with C-level ability [Copy], am the strongest auxiliary in my own military region. His daily job is to help S-class bosses temporarily copy top-level abilities, hiding their merit and fame. Until that accident, I accidentally copied the god-level ability [Trace of Time]. In order to save myself, I was forced to use time travel... But I didn't expect that the most powerful S-class from above suddenly stared at me: "Why do you have the power fluctuations of my brother who died in battle?"