Trails In The Sky is a relatively older title, initially a PSP exclusive but now runs on the PS Vita (and maybe on the PS3 as well, not sure though).
I'm running it on the Vita, in its native PSP emulator, and it runs beautifully. The Vita also has an option to add bilinear filtering to minimize the pixelization effect so it looks decent too.
I highly recommend it if you're into JRPGs, and if you're not, well, it's a great way to get into them!