I admit, I've done this lol

There goes her phone...

That's gonna be a pain to clean given how soda tends to be sticky when it dries up.

Interesting how Yukie draws Yumemi in those "born loser" situations we can relate to. I have never followed the series, so is she like this or is it something Yukie makes up?

Riamu is a sort of punching bag even in the series, yes.