Artist: hiroyuki (artist)
Member of the circle ( 自称清純派 ).
Author of "That's Why I Assault Ren" ( だから俺はレンを襲う ), the source of the meme "A cat is fine too."
See also
* http://doujinshi.mugimugi.org/book/68687/
* http://www.mangaupdates.com/series.html?id=34997