Artist. "Matsumoto Drill Lab" is both the artist's penname for mainstream publications and also his doujin circle name.
https://www.pixiv.net/users/8690
https://www.pixiv.net/stacc/doriken
https://twitter.com/doriken3
https://twitter.com/intent/user?user_id=60262786
https://yosiyuki13.fanbox.cc
https://sketch.pixiv.net/@doriken
http://doriken2.blog.fc2.com
http://doriken.h.fc2.com/top.htm
http://blog.goo.ne.jp/doriken2
http://twitpic.com/photos/doriken3
