Artist, nicoLive user.

Japanese name: 薄井硫酸 (Usui Ryuusan)
Old name: 稀硫酸 (Kiryuusan)
Circle name: 化学室｡ (Kagakushitsu.)

See also

• Homepage: http://kgkst.web.fc2.com/
• Blog: http://kgkst.blog.fc2.com/
• Pixiv account: http://www.pixiv.net/member.php?id=558337
• Tinami account: http://www.tinami.com/creator/profile/9233
• Niconico account: http://www.nicovideo.jp/user/403926
• Niconico community: http://com.nicovideo.jp/community/co35169
• Niconico Seiga: http://seiga.nicovideo.jp/user/illust/403926
• Nicopedia article: http://dic.nicovideo.jp/id/4153430
• Privatter account: http://privatter.net/u/usrs
• Twitter account: http://twitter.com/usrs
• Twitpic account (server stopped): http://twitpic.com/photos/usrs
• Photozou images: http://photozou.jp/photo/top/325858