@Baseballbat boy: It seems that different sources use different spellings for the circle's romaji name. I've seen Bubu Kiddo, BooBoo Kid as well as the spelling used by this gallery. If you're looking for other related titles, you might check on doujins at DLSITE as well as at the Doujinshi Database at http://doujinshi.mugimugi.org/browse/circle/39648/Bubu-Kiddo/
Also, this doujin is titled "Bad End" but the last few pages don't seem to have any illustrations of something bad happening.