Aya Fujimiya
Aya, though not exactly the -main- character, sure has quite a few outfits to choose from. There's the white sacrificial dress, the kimono that she was wearing, and her hospital clothes.

To maybe make the white dress less revealing, we can definitely put in skin-colored panels over the bust and at the sides under the arms, or we can make it higher and close tighter.

Sorry we don't have any images of these outfits ^_^;