Not sure what kind of future Renko and Maribel live in, but they do still have that kind of glasses over there, right? 🤔 Or perhaps optometry has become so advanced (and more importantly available) that vision correction is no longer a thing for eyeglasses in that future?

That is to say, Merry genuinely has no idea that Sumireko needs her glasses to actually see clearly. Because where she comes from, it's purely fashionable as an accessory.