All spirits appeared simultaneously by Anna's summon.
The spirits had little information about what they were going to do next, so they looked at Alex mysteriously.
Suddenly, Anna stepped forward. "I will explain our current plan!"
Anna began explaining the plan until she reached where Alex wanted to discover the Underwater Cave. No one objected to this plan because they also wanted to know about this Underwater Cave. However, there were three spirits that would be greatly restricted by this setting: Fabio, Leoz and Jeanne. These three were the strongest combatants, and having this restriction truly hindered their progress.
Besides, Alex and his contracted beast had all fire elements. The same applied to Firia. Alex wanted to test how his Pure Fire fended this disadvantage and decided on the second plan.