URLs

• https://www.pixiv.net/users/786811
• https://www.pixiv.net/stacc/okinya
• https://twitter.com/sadaokina
• https://twitter.com/intent/user?user_id=132950235
• https://sketch.pixiv.net/@okinya
• https://skeb.jp/@sadaokina
• http://www.eonet.ne.jp/~okina/
• http://members.jcom.home.ne.jp/off.okina/