What is your VNR settings? I download it but it only trans name.Always me something like : this text too long to translate.
Also how can i use demon factions? They always locked.
Unlocking the demon frame is one of the military rank abilities (that you increase by automatically cashing in 3 medals). It's the one with the Skull.
As far as the other abilities go, the most important ones are the ones in the first two rows. In the first row are the ones that unlock the 5th, 6th and 7th leader frames. The last ability increases the AP cap from 6 to 10, which is useful later on.
In the second row, the first ability gives you +1 AP every even round (3 AP on turn 2, 4, 6, 8, etc...). The second ability allows you to swithout out characters every round. The third ability unlocks the Demon leader frame. The fourth bonus increases chance to boost by 100%.
The 3rd row has +30% to HP, +30% to phsyical attack damage, +30% to magic, and +30% to xp.
The 4th row has ???, more rare cards found, hanny zippo (once per map, when you are defeated, you'll heal 50% hp and fight on), and 3% bonus to everything.
The 5th row has 3% bonus to everything, raise maximum bonuses by 25% (bonuses are capped at 49% naturally), raise maximum bonuses by a further 25%, and finally better Overkill (allows you to continue to spend AP after defeating the enemy, until the end of the combat round).
By Blue Ogre Battle I assume you mean Babolat (easy version). You just need to have a character with an attack or ability that removes buffs like Arlcoate or Magic and have them remove his buffs before it maxes out.