https://www.pixiv.net/users/744509
https://www.pixiv.net/stacc/s0680067
https://twitter.com/semisuke
https://twitter.com/intent/user?user_id=66505180
https://sketch.pixiv.net/@s0680067
http://piapro.jp/s0680067/
http://pixiv.cc/semisuke
http://twitpic.com/photos/semisuke
http://yfrog.com/user/semisuke/photos