Here is all the is all the information I have on it:
http://www.pixiv.net/member_illust.php?mode=medium&illust_id=58298099&comment_id=59612369
https://www.doujinshi.org/book/939905/Imouto-wa-Ani-ni-Sakaraenai!/
>>14991715
bump, many people including myself are looking for this
Bmp