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Tombstone duo compared their outfits and said they look like they're from the same anime, I kinda see it. Both have eyes a shade darker than their hair, a tiara accessory, a gem accessory on their chest, a corset element, and a pendant hanging from the left of their waist. I guess the Advent character designers would try to make designs that fit stylistically with other HoloENs, interesting to see it pointed out.