How do battles work?

Battles are turn-based, allowing you to choose attacks or skills to do damage against your enemies, or bolster your fellow crew members. The number of enemies you have left to fight displays on the top of the screen. Battles are over when all enemies are defeated. They can be defeated either by lowering their Health Points to 0, or reaching three bars of low Morale. Lowering your enemies’ Morale also decreases the amount of attack damage they can do. Raising your allies Morale boosts their battle stats.

If your team (or your enemy’s team) has high Morale across all characters, your (or your enemies!) chances of characters helping each other attack are higher.