Resized to 85% of original (view original)
Artist's commentary
"What is "Wakame-zake"!?"
Cirno: "Hey hey, tell us, Yuuka!"
Medicine: "I want to know too!"
Wriggle "Yes, I'd like you to you practically demonstrate it for us so we can understand?"
Yuuka: "Eh, no, uh, ummm..."
Questions like that from little girls on older women make nice situations.
Ah, and Yukari-chan immediately escaped via gap.