First things first, since I played this game in its original vita release form, I definitely experienced some performance issues while playing that were fixed by the PS4 port. Since these have been updated by my understanding I won't raise them, but I want to note their existence on vita.

With that being said, my opinion on U&U is a little strange. I really disliked the monotony of the gameplay and the artificial difficulty, and none of the side quests were particularly interesting. The pacing of the narrative is super weird, going from nothing happening in the first 10 or so chapters to more or less everything at once. Shion's route is an inconsistent mess that uses one of my most hated tropes of all time.

And yet I'm still really fond of U&U! The other main girls are all really interesting and awesome, the main antagonist owns every minute of screentime they get (which admittedly is not many, though Director's Cut may fix this) and the lore has a lot going for it too. Nana's subplot is straight up adorable if you go all the way with it, the replay value is neat... in general U&U just feels like a very weirdly cosy game. Also, yay for equal fanservice between the men and women!

However, with Director's Cut existing... I really can't recommend the vanilla PS3/vita releases anymore. Even without playing DC just yet the devs pretty much admitted these versions were unfinished without the "true ending not told ten years ago", so really I'd say just go straight to DC rather than the original game, there's nothing in them that isn't also in DC aside from maybe slightly better lighting.