You might find PlayStation 3 or PS Vita emulators (like RPCS3 or Vita3K) that can run J-Stars Victory VS on PC. While emulation itself is legal, you do not own is still piracy. Moreover, emulation requires a powerful PC and often suffers from graphical glitches, crashes, and poor performance.

Here's a comparison of J-Stars Victory and PC crack games free:

The PS3 version of J-Stars Victory VS is roughly 4 GB to 5 GB. If a download package claims the full game is compressed into a 50 MB installer, it is fake.