Yuya leans sideways as he looks at Steven's gem. Part of who he is... that's something Yuya grasps, although it being his mother adds a whole other layer of weirdness to it.

"Oh... but she's not living inside you?" Steven talked about her like she was certainly gone, so he's pretty sure not. "Blue Diamond told me a little about how gems work... uh, and Connie told me about how you two are protecting your world."