The first change Noah observed was a purple spear penetrating through the cracks. As it reached out of the egg and bent to touch the ground, he realized it was actually Arachne's leg.
Observing from a distance, it appeared that the sharpness and color were the only changes. However, upon closer inspection, Noah noticed a few other differences. Her leg, which was originally covered in fine hair, now appeared almost bare. This made it seem as though she didn't have hair on the first segment of her leg at all.
Additionally, the white pattern that originally formed within her hairs had disappeared, leaving only darkness that made up the rest of her leg.
It wasn't until the other leg poked through that Noah's tired mind caught up to how long they were. They were at least half a size longer than before and a few inches thicker.