Pool: original - Magic Marker (Danaume)
AnonyMPC says: This story was inspired by a picture by artist Danaume on hentai-foundry, who wanted to inspire me. Well, it worked. The actual picture she drew I intend to get to in Book Two, so I'll put a link in at the end (as well as to an additional picture that takes place during this story), but I do need to make my thanks up front. Without her work, this would not have been possible.
https://www.asstr.org/files/Authors/AnonyMPC/www/Magic_Marker_Book_One.html
https://www.asstr.org/files/Authors/AnonyMPC/www/Magic_Marker_Book_One.html