Artist.
Japanese name: 日高 こーよー (Hidaka Kooyoo or Hidaka Kouyou)
The other name: こーよー (Kooyoo) or 青葉 こーよー (Aoba Kooyoo or Aoba Kouyou)
Site name: ヒダカソウ (Hidakasou)
https://www.pixiv.net/users/1254659
https://www.pixiv.net/stacc/f_koyo
https://twitter.com/F_koyo
https://twitter.com/intent/user?user_id=119670310
https://seiga.nicovideo.jp/user/illust/12200108
http://com.nicovideo.jp/community/co1359315
https://www.nicovideo.jp/user/12200108
https://pawoo.net/@F_koyo
https://pawoo.net/web/accounts/143353
https://koyo.fanbox.cc
https://www.pixiv.net/fanbox/creator/1254659
https://sketch.pixiv.net/@f_koyo
https://hidakoyo.tumblr.com
https://ask.fm/f_koyo
http://hidakasou.blog.fc2.com
https://privatter.net/u/f_koyo
https://www.stickam.jp/profile/hidaka_sticka
https://www.pixiv.net/stacc/dawndusk
https://sketch.pixiv.net/@dawndusk
http://hidakasou.web.fc2.com
http://p.twipple.jp/user/f_koyo
http://twitpic.com/photos/F_hidaka
http://twitpic.com/photos/f_koyo
http://yfrog.com/user/F_hidaka/photos
