Artist.
Japanese name: きしあ (Kishia)
Site name: 純愛ist (the artist uses this spelling: Junaist)
https://www.pixiv.net/users/4333693
https://www.pixiv.net/stacc/kisia
https://twitter.com/ki_si_a
https://twitter.com/kisia96
https://twitter.com/intent/user?user_id=1476614934
https://twitter.com/intent/user?user_id=3242512249
https://sketch.pixiv.net/@kisia
http://kisia.blog.fc2.com
https://odaibako.net/u/kisia96
