Artist. Formerly tagged as youka or youka kyoudan.
Japanese name: ようか (Youka)
Circle name: 幻想教団 (Gensou Kyoudan)
https://www.pixiv.net/users/142472
https://www.pixiv.net/users/2091331
https://www.pixiv.net/stacc/yo-musien
https://www.pixiv.net/stacc/youka_noise
https://twitter.com/youka_noise
https://twitter.com/intent/user?user_id=83778275
https://seiga.nicovideo.jp/user/illust/32169
https://www.nicovideo.jp/user/32169
https://sketch.pixiv.net/@youka_noise
https://www.tinami.com/creator/profile/29367
https://www.pixiv.net/stacc/youka_kyoudan
https://twitter.com/youka_kyoudan
http://twitpic.com/photos/youka_kyoudan
http://yfrog.com/user/youka_kyoudan/photos