Found at https://www.pixiv.net/en/artworks/80440877#manga

This seems a shortened(?) version of https://www.doujinshi.org/book/1100306/ although the name of the artist and book used used on pixiv are not the same as on mugi. Artist Twitter is https://twitter.com/wakaroh

The text on pixiv translates as "The demon-destroying mother spider book that was issued a long time ago is out of stock, so we will release it. The mother spider is cute, isn't it?"