That would be an ominous way to wake up, finding out your little sister has a birthday present for you -- especially if that isn't something she usually does, and she's the really bratty kind of little sister. If you can't tell, Aylia is "changing" in the last panel -- that's how she changes clothes (it takes less effort on her part, and it means she doesn't have to do laundry). I've shown her doing that once before, in Strip #406, but that wasn't exactly the same, so I figured a little clarification couldn't hurt.
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