Artist.
Japanese name: 千秋 コウ (Senshuu Kou)
The other name: 終焉少女まつりん (Shuuen Shoujo Matsurin)
Old names: 祀 (Matsuri), ひるげ (Hiruge), ぱぷこ (Papuko)
https://www.pixiv.net/users/5109668
https://www.pixiv.net/users/10314193
https://www.pixiv.net/stacc/papupapuko
https://www.pixiv.net/stacc/sensyuu
https://twitter.com/_mtRn_
https://twitter.com/maturi02
https://twitter.com/intent/user?user_id=3203684823
https://twitter.com/intent/user?user_id=937248721514852352
https://sketch.pixiv.net/@sensyuu
https://twitter.com/emuy52
https://twitter.com/sennsyuuu
http://twitpic.com/photos/maturi02
http://twitpic.com/photos/papupapuko