Artist.
His Touhou works is well known to NicoNico users for a parody-style folklore/fables and ZUN-like art.
'Moriya Step' (post #670248) originates from his video.

Artist name: kamS (かむす)
Site name: kam'S
Real name: 武川 克巳 (Mukawa Katsumi)
(He never uses his real name on the internet.)

See also

• Home page: http://park5.wakwak.com/~kam/
• Nico Nico Douga account: http://www.nicovideo.jp/user/45465
• Nico Nico Douga MyList: http://www.nicovideo.jp/mylist/10285080
• Nicopedia article: http://dic.nicovideo.jp/id/665110
• Tinami account (deleted): http://www.tinami.com/creator/profile/19534
• Nijie account: http://nijie.info/members.php?id=552
• Twitter account: http://twitter.com/kams_xxx
• Twitpic account (deleted): http://twitpic.com/photos/kams_xxx
• Old twitpic account (deleted): http://twitpic.com/photos/kam_s
• Old Pixiv account(deleted): http://www.pixiv.net/member.php?id=191940
• Pixiv account: http://www.pixiv.net/member.php?id=4090141

• Oota Jun'ya (style)
• style parody