I have a PSP, I won it from Mcdonalds-Never thought you could actually win, but it took 8 weeks to get here, only downside:/ anyway...
I have Naruto Narutimate Portable, the Japanese version of this game, I imported it as soon as I saw that it was selling on ebay.*
Its* just like Ultimate Ninja but portable, and it has all the characters from UN2, except the special chars (anbu kakashi, taijustu naruto etc.) and theres less jutsus but overall a good game. I couldn't get all the way through story mode, way too much kanji >.<
So I downloaded a save game with all the characters. Can you blame me?
One thing I wish it had was Game Sharing, that would make it supreme!
EDIT:The english version has gamesharing! Now to get a friend and find the gamesharing option in japanese, if theres one in the japanese version o.0
Any questions about it you can ask me.* ^_^
About a slim PSP, how much slimmer can it get, look at the disc drive need to run games with the screen, I belive its as slim as it can get, but that could change, there* might be a wy to move the drive. *