Artist. Formerly tagged as koyoi.
Japanese name: 杞宵 (Koyoi)
https://www.pixiv.net/users/745760
https://www.pixiv.net/stacc/ruka09
https://twitter.com/coyoyoi
https://twitter.com/intent/user?user_id=1181519774
https://seiga.nicovideo.jp/user/illust/1713597
https://www.nicovideo.jp/user/1713597
https://pawoo.net/@coyoi
https://pawoo.net/web/accounts/417680
https://sketch.pixiv.net/@ruka09
https://twitter.com/coyoimo
http://com.nicovideo.jp/community/co1418977
http://theinterviews.jp/coyoimo
http://twitpic.com/photos/coyoimo
http://yfrog.com/user/coyoimo/photos
