Artist.
Japanese name: 上善 和弥 ("Ueyoshi Kazuya" or "Ueyoshi kaZUya")
The other name: うず (Uzu) or 和弥 (Kazuya)
Old name: 木野 和弥
Site name: Pe5lop!
(The artist also has accounts of Cosplayers-Archive and Koebu. They are unrelated to danbooru, though.)
https://www.pixiv.net/users/1446228
https://www.pixiv.net/stacc/pe5lop
https://twitter.com/pe5lop
https://twitter.com/intent/user?user_id=99133537
https://sketch.pixiv.net/@pe5lop
https://pe5lop.tumblr.com
http://twpf.jp/pe5lop
http://p.twipple.jp/user/pe5lop
http://twitpic.com/photos/pe5lop