Artist, NicoNico user.
Japanese name: 温泉卵 (Onsen Tamago or Onsentamago)
Name as a doujin artist: 喜怒哀楽 (Kido Airaku or Kidoairaku)
Circle name: ぬるま湯温泉 (Nurumayu Onsen)
https://www.pixiv.net/users/1179219
https://www.pixiv.net/stacc/onnsenntamago
https://twitter.com/onnsenntamago07
https://twitter.com/intent/user?user_id=133174896
https://seiga.nicovideo.jp/user/illust/2087455
http://com.nicovideo.jp/community/co48498
http://dic.nicovideo.jp/id/4173174
https://www.nicovideo.jp/user/2087455
https://sketch.pixiv.net/@onnsenntamago
http://www.stickam.jp/profile/onnsenntamago
https://www.pixiv.net/users/319688
https://www.pixiv.net/stacc/nurumayuonsen
http://twitpic.com/photos/onnsenntamago07