TL;DR: Author doing some stupid numbering with promo and whatnots, leading to two chapters being off from the Pixiv uploading count. Because the upload counts always shows whereas the titles are cut off, no one was aware of the actual number until you click on the chapter itself.Why the number change? 58.5=59?
Probably both. Remove both, and problem's solved.Rather than the pantyhose, isn't the main cause here the sweater?