Thinking /s/4a8bdfed7e/1550643-29 was inspired from /s/40d66ccbe8/1221973-2. The latter came a few months before, and the gallery only has a couple images in that style. How nice if they actually were the same character. Either way Kekemotsu would be proud :)
Fantastic gallery overall, quite a few of these are really breathtaking. Hope Sawada Yuusuke will make more artbooks for them.