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Looking at the Skill's description, there's five more Slots available.
{Divine Spiritual Vessel Guardians: 5/10}
Guardian 1: [Player: Titan]
Guardian 2: [Player: Achlys]
Guardian 3: [NPC: Titania]
Guardian 4: [NPC: Nieve]
Guardian 5: [NPC: Acorn]
Guardian 6: [Not yet Chosen]
Guardian 7: [Not yet Chosen]
Guardian 8: [Not yet Chosen]
Guardian 9: [Not yet Chosen]
Guardian 10: [Not yet Chosen]
I don't really know if I can get more slots than that though, the Skill itself doesn't say anything. So it might as well imply I can only add five more Guardians.
And that's totally fair, seeing how much power they obtain from the Divine Spiritual Vessel Awakening and all, it makes some sense indeed!
Now, while we were soon to reach the arena, I decided to add my daughter and her friends as Guardians. They had already decided to help as much as possible, so they were going to become permanent party members for now.
