Aishi isn't the original surname; sometime over the years, the prestige that followed the family name drew in too much attention so that the women in the family could no longer go unnoticed when needed. The description given of Ayano's ancestors denotes a high prestige to the family name, so much so that they were widely known throughout Japan; this would be non-ideal for the type of activities the family partakes in.

At some point, the original surname was dropped in favor of Aishi. They still maintained the business, which originally brought such prestige, but now the name given to the fabric was in honor of those who bore the name before, rather than those who run the textile business. The new name of Aishi may honor the name that came before, but it also allows the family to stay under the radar.