Well, I wonder how Aqua falls into that game cuz it's about panties, which she doesn't wear.On that note, even though I assumed Aqua doesn't wear panties and that her skirt might barely cover anything, it still doesn't excite me. Like Kazuma said, no matter what, you just can't see Aqua as heroine and she basically has almost zero sex appeal.
Actually it's not that, as a deity, you literally can't see anything under her skirt, it's just skin that doesn't excite anyone, Kazuma seen her naked a few times and he felt absolutely nothing, but that doesn't mean she isn't attractive, it's a protective spell cast on her, imagine what No Game No Life did with Shiro, Jibril and Steph, he removed all genitals and nipples making it SAFE, is it interesting ? probably, but does it excite you ? nope. Also she's an idiot and doesn't get sick.