Artist. Formerly tagged as oyuya.
Japanese name: ゆや (Yuya)
The other names: ユヤ (Yuya) or "oyuya"
Site name: 在るか (Aruka, the artist uses this spelling: "ARUCHA")
https://www.pixiv.net/users/611802
https://www.pixiv.net/stacc/oyuya
https://twitter.com/oyuya
https://twitter.com/intent/user?user_id=32840009
https://pawoo.net/@oyuya
https://pawoo.net/web/accounts/311795
https://sketch.pixiv.net/@oyuya
http://livedoor.blogimg.jp/lotusakura/imgs/3/d/
http://blog.livedoor.jp/lotusakura/
http://privatter.net/u/oyuya
http://p.twipple.jp/user/oyuya
http://twitpic.com/photos/oyuya