>>27856104Good reasons stated all around already. But technically it's because her models have been available for non-lewd mmd purposes for ages directly from cover. Maybe not the latest one.
From a ero-technical POV, her model is prime for iwara purposes. Sora's model can be seen as more suggestive than most due to the amount of skin she shows by default: neck, arms, underarms and almost sideboob, navel, lower back, thighs.
The relatively short skirt is great for those twirling panty shots and for the apparently favorite tactic of having a model strip out of its panties whilst retaining the skirt. Can't do that if the model is wearing pants or shorts.
It's thus supremely ironic that such a seiso chuuba possesses such an lewdable model. This fact has been greatly exploited by the denizens of that site.
t. 185+ Sora mmd's in my coom collection
