URLs

• http://www4.pf-x.net/~yk/
• https://www.pixiv.net/users/202791
• https://www.pixiv.net/stacc/y_k
• https://twitter.com/kaiware_yk
• https://twitter.com/yk_waika
• http://twitpic.com/photos/kaiware_yk
• http://twitpic.com/photos/yk_waika
• http://yfrog.com/user/yk_waika/photos