Artist, mangaka. The author of O/A.
Also known as “Watarai with a reputation for his after sex art” (事後に定評のあるわたらい).

Pen-name as a mangaka: 渡会 けいじ (Watarai Keiji)
Doujin & pixiv nickname: わたらい (Watarai)
Circle name: 御茶ノ水木人会 (Ochanomizu Mokujin-kai) (the other member: Yamamura Hitsuji)
Site name: Upper Ground

See also

• Blog: http://kgw-gutundbose.mo-blog.jp/
• Pixiv account: http://www.pixiv.net/member.php?id=6086
• Drawr account (empty): http://drawr.net/upperground
• Twitter account: http://twitter.com/watarai
• Twitpic account: http://twitpic.com/photos/watarai
• Wikipedia article (JP): http://ja.wikipedia.org/wiki/渡会けいじ
• Baka-Updates Manga: http://www.mangaupdates.com/authors.html?id=9222