Welcome to the world of drinking potions instead of crushing the usual crystalline glass bottles they're usually stored in and letting the resulting mist from it heal the wounds from the outside, in. Though he's fairly certain that the attendants would be mad if they tried that with these cups in particular.

He's finished with his before Gladio speaks up again, a slightly proud look in his eyes that both work as intended. Not that he doubted he'd be able to do it, but-

"Dad said- he wants me to join you, in the gardens the next full moon. Something about a bond, 's too tired to catch all of it." He informs, admitting just how drained he was at the end of it. But, no harm beyond what that trespasser did. Physically, at any rate. "He's probably talking to your dad about it, too."