Left (I believe) is a discontinued pascal Dr. Martens, right is Solovair derby. I am trying to find something similar to the left one: more streamlined, wraps naturally around the foot whereas the right one expands outwards and looks like a clumpy boat.
LF Color Source: 1girl, blush, close up, crop, cum in mouth, face, face focus, forehead mark, green eyes, haruno sakura, open mouth, parted bangs, pink hair, saliva trail, tongue out, upper teeth