I don't see why Sanae thinks Aya's skirt is too short, she probably wore skirts of smilar legnth back when she attended highschool in the Outside World. With that said, I like that the girls wear each other's costume but keep their color schemes.
On a side note, I already mentioned that many years ago, but I really love this artist's artstyle and use of color, his AyaSana fanarts give off strong Pasteltel vibes and I really dig that.
