If I translated the commentary correctly, it looks like Chanta did the linework, and Masanaga did the coloring. So, I've tagged it with both artists.

The linking of this image in the Twitter source URL also seems to confirm it.

is what's going on here, she's being touched by a cold ramune bottle? a little confusing

bigsky6814 said:

is what's going on here, she's being touched by a cold ramune bottle? a little confusing

I'm curious what else the punchline could be.

That glove implies that's Yukari. So she's probably just messing around.