The main casts:
Ishida Mitsunari ~ Apollo Justice
Shima Sakon ~ Phoenix Wright
Tamaki ~ Trucy
So yeah, Tamaki is Sakon's daughter here. Sakon aids you in the first stage, but from the second stage onwards, Tama will be your sidekick.

Basically, the battle itself is equivalent to cross examination, and the persuasion section is more reminiscent of a psycho-lock breaking section.
Your generals are the "statements". You can request for reports which is like "pressing witnesses" which don't cost you a morale arrow. Then you "present" them with orders; if you give an incorrect order or give it at a wrong time, a morale arrow will drop as a "penalty".

The save system is similar to AA too. You can save anytime by pressing Start. But the differences are that there are 3 save slots here (I have each of them used for pre-battle, battle and persuasion respectively), but after you save you'll return to the game instead of title screen.

Well, despite the blatant similarities with AA, it doesn't stop me from enjoying this game and its story. Probably my only irk is the lack of voices. I wish I could hear Mitsunari shouting "Susume!" when he issues a checkmating order, the equivalent of Phoenix's "Take that!" when giving a decisive evidence...