From what I experienced playing World Destruction :
In normal form :
X : Strong hit
Y : Multiple hit (the number of hits depends on who you control)
A : Open item or magic
B : Defending
In normal form + L :
X : Some same description mentioning strong hit skills?
Y : Some same description mentioning how much multiple hits is?
A : Open item or magic
B : Defending
When you pressed A in normal form :
X : Offensive magic
Y : Defensive / Supportive / Healing magic
A : Item
B : Back
When you are battling, you will notice why you have 2 circle (this circle controls how much you attack to opponent) and the enemy sometime keep attacking rushingly. Wonder why?
~> That's because the enemy reached critical state, if the enemy reached the critical state, he/she/it will gain 1 circle in hand, so it will crush you longer.
So, how are we gonna do to gain more circle?
~> IMO, try to gain critical too, maybe AGI will improve you getting circle better.
The maximum of the circle could gain?
~> Around 7
What if our circle goes 7?
~> You will get a "GOOD" mark in damage, and also maybe you will launch your super skill (this is my IMO). The GOOD mark will add +2 to your skill points after battle over.
How do you SAVE?
~> When the battle is over, and you could freely move, you will notice you could open MENU from X button. Inside of the MENU, please notice the very below sub menu, which if translated it is SA-VU (SAVE)
Oh yeah, also check your status right away, to equip the powerful weapon and powerful armor, also, adding a voice power to get a lovely battle and add skill points to your every attack skills / offensive magics / supportive magics / healing magics to supports you from any dangerous enemy~!
Wichiandy