If your HP reaches 0, you'll no longer be able to enter attacks in battle until you heal your character.
If you run low on HP, you can use a healing item to replenish HP.
Purchase a healing item from the Item Shop or get one from a random drop.
Put in a request in the healing thread.
Please wait a few days for your request to be processed. These are currently processed by an admin but later we'll have a system where you can self-serve use a healing item instantly.
Available healing items include...
If your character has the Hearty Talisman ability, your character will automatically heal 5 HP with every attack in battle.
How to check your current HP
You can see how much HP (Health Points) your character has by viewing your character sheet and looking at the HP field.