This feeling of shame you guys are mentioning was explicitly called upon on the Tv Tropes page for this 4koma, under Fan Disservice.
Just thought that was worth mentioning.
AccidentAt least knock, oh naive Mistress.My head is starting to hurt....... Wait, huh? What are you all doing?Reimuuuu!! I've come over to plaaaay!!RustleRei-...!?Urk!!Preparing for Christmas. Reimu's over there.Gasp...Creeeep...FidgetSquirmOh, who cares about Christmas! Reimuuuu!Waaagh!? Remilia's collapsed!!Eh...!? But why...!?Shuff