request - tales of vesperia japanese

[Annie]

You can try to test it and report the issues that make the emulation not being able to progress if they aren't reported yet.
Apart from that, devs usually work to fix the emulator in general, not to fix a specific game.
Although they do/did pick specific games to fix stuff until it looks just like it would on a real PS3 if it's near to Playable and easy to fix.