Naturally, when Vaan witnessed the embryo fade out of reality, he immediately thought of Fourth Dimensional Beings like the Outer Beings. Only they appeared invisible and distorted the surrounding space with their presence.
However, Vaan could also see the embryo clearly when it faded back into reality, something uncharacteristic of Fourth Dimensional Beings.
Instead, the embryo within the frozen egg appeared to be closer to the Spirit Sentinel of Earth, which had shown traits of the third dimension and fourth dimension.
That said, the Spirit Sentinel of Earth was a spiritual life form.
On the other hand, the embryo was biological and countless times stronger even before it was born.
Although Vaan suspected the Outer Beings laid the unknown frozen egg, he didn't understand why or how it produced such an existence.
After all, Outer Beings were believed to be anti-life existences, killing every living being in sight like it was their most basic instinct.
