Humans are not born with exspheres on them--they use key crests to equip them. That fact alone is what seals the deal about differences between this mirror Aselia's humans and this world's blades, even if it raises even more questions that Zelos is just aching to have answered. But the important thing here is that it's not fully equal, he thinks. Sheena will be fine even if her exsphere is unequipped or gets lost, and that's fine, that's logical, and that fact settles itself into Zelos' mind pretty easily, and yet he still jumps in a slight panic and reaches for his driver when she pops the crystal off her skin.

The sky flashes red again as the artificial sun sets and the last bits of sunlight cascade over them. Sheena--doesn't disappear, or die. Or anything for that matter. Neither does Zelos. So, okay, hoo. Okay. This is a dream. A dream, Zelos. A dream. Repeating that to himself the Aegis tries to regain composure quickly, clearing his throat and dropping his hands half the way back down, anxiously reaching over for Sheena's detached crystal just in case. Zelos makes no move to grab it, an irrational and illogical part of him telling him that touching anyone's crystal, exsphere or core, is inappropriate as fuck, so he just awkwardly remains there until a little laugh escapes his lungs.

He has a feeling the calm he's attempting to portray is not very convincing, but--whatever. "Okay, then. Alright," he clears his throat. "I think I've learned a lot. That's--you can put that back in there now, thank you." That out of the way, Zelos lowers his hands and huffs, pushing his bangs back as he relaxes again. "Architect, how do you just take that off? Your world is so backwards and weird!"