Well, different people react to setbacks and defeats in different ways. The twins are practical people, so they decide to spend the time interval between facing the defeat and facing the consequences of defeat productively by getting some R&R done. That requires a mindset not too many people share, but to me it seems far from an unhealthy one.
Of course, your assessment will partly depend on what you assume the nature of “this and that” to be. I will provide no strict canonical answer to that – personally, I think it’s most likely they spend all night playing shogi, or perhaps crocheting. With a sandwich break in between. But if you prefer to imagine a different scenario, be my guest. Just stay within the strict limits of propriety, please…which, of course, you’re free to define as you will… XD
It’s not blatant fan-service, though – in plot terms, this strip still serves the purpose of name-dropping the Queen again, and fluffing up her evil by stressing how afraid of her her subordinates are. That’s pretty much an obligatory thing in such a post-defeat situation…it’s just that there’s a certain leeway in the specific form it takes…
More on Thursday.