https://www.pixiv.net/users/51400
https://www.pixiv.net/users/8483977
https://www.pixiv.net/stacc/ops2
https://twitter.com/cck_han
https://twitter.com/intent/user?user_id=149589753
https://sketch.pixiv.net/@ops2
https://twitter.com/cck310
http://p.twipple.jp/user/cck310
http://p.twipple.jp/user/cck_han
http://twitpic.com/photos/cck310
http://twitpic.com/photos/cck_han