[ The information gives Yuri pause, turning to gawk at Byleth. The guy isn't the sort who typically jokes around or makes something up to see what kind of reaction it garners — that'd be Yuri himself. Even so, it's hard to wrap his mind around oil being used to create these colorful containers that weather so well. ]

Oil, seriously?

[ In the next moment, he spurs himself to resume his task: filling the water bottles. They have a great many books in their near future, hopefully. ]

I wonder what sort of magic that'd involve. Bet you Constance would have ideas, if she heard about it.

[ For better or ill, because... Constance. Rainbow tea, magic volleys raining from the sky on friend and foe alike Constance. ]