If Vaan's body were destroyed, the Contracted Spirits undoubtedly die with it.
After all, it was impossible for them to survive the annihilating power that would destroy his body, soul, and existence. As such, the only way to ensure their survival was to separate them from him.
However, where could he temporarily leave them during this perilous period?
Astral Soul Realm?
When Vaan thought about this possibility, he couldn't help but feel moved. If he could place the Contracted Spirits in this astral plane, they would definitely survive every possible disaster.
Due to the nature and difficulty of reaching the Astral Soul Realm, it was no different from Vaan's private garden.
Thus, if he could successfully store things in this realm, then it would become his most secured vault. The various wealth he accumulated in his Heaven-Swallowing Space could also be transferred to this plane to prevent it from being lost during bodily destruction.
