If you don't specifically need the minor balance changes or Relius Clover, the English version of BlazBlue: Continuum Shift II is already fully translated and available. Play on PC/Vita: BlazBlue: Continuum Shift Extend
However, the official US/EU versions came with certain quirks: censored character names (e.g., "Taokaka" remained, but some UI text was altered), and a mandatory English dub for story mode. For purists wanting the original Japanese voice acting with English subtitles, or for players who downloaded an ISO from a region without an official release, an English patch became essential.