I haven't seen or played Yu-Gi-Oh in a while, so maybe I'm just out of the loop, but why is there suddenly a bunch of yuri about these two monsters specifically?
This archetype specifically is about a Female Knight trying to complete the Labrynth Labyrinth, the boss is the white haired lady which due to having a plushie of the knight in one of the card's artwork people take it as her being interested in the knight.