Artist.
Japanese name: 坂月 リュウ (Sakatsuki Ryuu)
The other names: リュウ (Ryuu) or さかつき リュウ (Sakatsuki Ryuu)
Circle & site name: さざなみ (Sazanami)
https://www.pixiv.net/users/199159
https://www.pixiv.net/stacc/setouchi07
https://twitter.com/kasyu_to
https://twitter.com/ryu_zaki51
https://twitter.com/intent/user?user_id=140426767
https://twitter.com/intent/user?user_id=856336249933529088
https://pawoo.net/@setouchi07
https://pawoo.net/web/accounts/167534
https://sketch.pixiv.net/@setouchi07
https://ask.fm/ryu_x_y
http://ririri3.blog.fc2.com
http://ririri3.web.fc2.com
http://privatter.net/u/ryu_x_y
http://privatter.net/u/setouchi07
http://c10249511.circle.ms/oc/CircleProfile.aspx
http://c10249512.circle.ms/oc/CircleProfile.aspx
http://portal.circle.ms/Circle/Index/10249512
http://twpf.jp/ryu_x_y
https://twitter.com/ryu_aoharu
https://twitter.com/ryu_x_y
https://twitter.com/setouchi07
http://p.twipple.jp/user/ryu_x_y
http://p.twipple.jp/user/setouchi07
http://twitpic.com/photos/ryu_x_y
http://twitpic.com/photos/setouchi07
