Q: Why does my HP not always fully recover? A: When the bonus HP that your Exo Beast provides is used up, HP can only restore to the sum of your character and Endo Beast’s HP; When your Endo Beast’s HP is also used up, HP can only restore to your character’s maximum HP amount. When you are attacked, your Exo Beast’s HP will reduce first.
Goddess:Primal Chaos – Why does my HP not always fully recover? – [English]
- by game guide