URLs

• https://www.pixiv.net/users/25009
• https://www.pixiv.net/stacc/studiokougubako
• https://twitter.com/kougubako
• https://twitter.com/intent/user?user_id=89168059
• https://sketch.pixiv.net/@studiokougubako
• http://yiu26404.fc2web.com/index.htm