So reaching the plus disk is interesting. You have a whole whack of difficult battles to choose from. I chose to try boss rush mode first. Fight every boss up to and including the final boss (and sigil guardians). I was hoping it didn't include the final boss though because..well, you can refight that too if you like. But unfortunately you have to.
You'd think it wouldn't be hard, but every boss fight you do reduces your tp, and remember, switching characters costs tp too! Oh and if that's not bad enough, mr second last boss (ignoring the sigil guardians that is) likes to reduce your tp too when he hits you (not a big deal when fighting that boss alone, but in this boss rush? EEEK). Don't forget that you might die to easier bosses due to random stuff, such as Yuyuko's 100% success rate death spell opener!
So yeah, I spent about an hour doing it, then I reached the final boss, and I just said screw it and quit. I doubt I could have taken on the final boss without 4 of my characters, 2 of them tanks, and my last tank at 0 tp. Spending skillpoints on TP is looking extremely attractive now.
The plus side though is that there is alot of fun looking things to do after you beat the final boss. Unfortunately there doesn't seem to be an easier way to farm EXP.
Anybody who beat the game, what do you think is the easiest post-game thing to start off with? Boss rush? hong mk.2? Or are all the available stuff about equally difficult?