One Piece: Begin the War on Top

You came from hell, I came from Impel Down. When she woke up, Katie suddenly found herself a little prisoner on the underground floor. There were still more than thirty hours before Ace's public execution! "Host, don't panic, the strong god-becoming system is here to serve you. Just copy whatever you want, plus one-click upgrade auxiliary functions, so that the host can become a god in an instant!"