In this place dozens of kilometers above the ground, this altitude past the stratosphere but still not yet in the mesosphere, the boy spoke his name.
The air was 10 times thinner than it was on the surface.
Regardless, the two of them remained as capable of holding a conversation as ever, either because they loaded magical energy into their voices or because their hearing is abnormal. Enkidu heard his name clearly.

Fate/Strange Fake, Volume 7; Chapter 21 (Beings Shaped In Man's Image)