One with Earth
On one hand, Ryu sighed a breath of relief. If Ailsa had appeared in the castle in such a vulnerable state, he had no idea what those Zu Ancestors would do. He had no intention of trusting any one of them.
But on the other, he was at a loss.
This made things more difficult. Extremely difficult.
It was already going to be almost impossible for Ryu to control his energy through two different Planes of Existence. But now with this massive change in the size of Ailsa's body, he didn't even know if there was enough energy for him to do so.
Logically, Ailsa's change in size shouldn't make a difference. Since Ryu was undoing the seal on the outside, it shouldn't take more energy here.
But, different Planes worked by different laws. Also, Ryu wasn't naïve enough to believe that this change in size was meaningless. If anything, it was a clue to Ailsa's true state.