It's easy to tell Jakob's discomfort - it's something that he's witnessed from many people before, so it' doesn't perturb him.

"You can call me Ain."

This he offers before letting the silence reform between them. He's content to watch Jakob poke around like some sort of oversized jellyfish; perhaps a little creepy, but it doesn't occur to him to go away.

Instead he'll just float in the space inside the illusion, his hair and loose tendrils rippling without a breeze.