Shhhh my Vita will hear you.
Spoiler warning:
By my count 4. I've sold off more than I kept. I kinda quit buying that shit. I'm only counting what I view as super shallow games that are just trying to sell based on tittehs and shit. So I'm not counting Disgaea 3/4, Muramasa or Ys MoC. You might count some of those though.
The fact is, support for bigger budget western games got killed very early on. The Vita is a legacy console after all.I'd say there is practically no point in owning a Vita if you don't like Japanese games or indies.
I'm sure DL will agree with me on that one.