[Yuuri had grown rather serious while he was focusing on how to make the borderline work, but he perks up immediately when he sees that flicker, smiling with a little more warmth than she's seen before.]

I saw it! It's like that, and it gets easier if you practice it.

...It's a little easier when there's, um, motivation, too. That was the first time I used it for real, just now.

[And there is no motivation like not wanting to get killed and eaten!]