Artist.
Japanese name: 単一 (Tan'ichi)
Old name: 山田山田単一 (YamadaYamada Tan'ichi)
https://www.pixiv.net/users/137566
https://www.pixiv.net/stacc/rocky13
https://twitter.com/tan___ichi
https://twitter.com/tan__ichi
https://twitter.com/intent/user?user_id=52388614
https://twitter.com/intent/user?user_id=937200540190048256
https://sketch.pixiv.net/@rocky13
http://privatter.net/u/tan__ichi
http://twitpic.com/photos/tan__ichi
