A joint pen name of two artists.
Japanese name: 永山 ゆうのん (Nagayama Yuunon)
Artist(1): ゆうのん (Yuunon)
Artist(2): 那賀やま (Nagayama)
https://www.pixiv.net/users/149587
https://www.pixiv.net/users/43553
https://www.pixiv.net/stacc/nagayama
https://www.pixiv.net/stacc/poet0210
https://twitter.com/yama913
https://twitter.com/yunon0210
https://twitter.com/intent/user?user_id=133980473
https://twitter.com/intent/user?user_id=134337360
https://pawoo.net/@yama913
https://pawoo.net/web/accounts/72308
https://star-cradle.fanbox.cc
https://sketch.pixiv.net/@nagayama
https://sketch.pixiv.net/@poet0210
https://skeb.jp/@yama913
https://www.tinami.com/creator/profile/27998
http://kambachi.blog.fc2.com
http://mixi.jp/show_friend.pl?id=1573323
http://mixi.jp/show_friend.pl?id=4285667
http://mixi.jp/show_profile.pl?id=1573323
http://www.stickam.jp/profile/poet0210
http://c10006473.circle.ms/oc/CircleProfile.aspx
http://c10033316.circle.ms/oc/CircleProfile.aspx
http://p.twipple.jp/user/yunon0210
http://twitpic.com/photos/yama913
http://twitpic.com/photos/yunon0210
http://yfrog.com/user/yunon0210/photos
