It must be hard for Yuna, to know someone but not have them know her in return. She has to wonder just how many times this has happened to the other woman before. But no matter what the situation Light would always want to know.

"This crystal is how I summon my Eidolon, Odin. It's very important to me," Lightning admitted. If Yuna could see it in action maybe then she'd really see something familiar.