The problem is sometimes you don't know what you are getting yourself into, and by the time you've seen the spoiler, it would be too late to regret it ^_^;
Anyway, speaking of the game, Aquaplus released new screenshots of the battle system in the PS2 version
http://www.aquaplus.co.jp/uta/system.html
Looks like you can (compared to the PC version):
* Equip different armor and weapons
* Have Eruruw use items in battle
* You can see a 'comparison stats' shot when you choose an enemy to attack
* Apparently you can still sneak a peak at Kamyu's panties in that one shot (unless they're thinking of censoring it later...)
* A new female character, Kamuchataaru, has been added