Mangaka. Author of Hoozuki-san chi no Aneki. Formerly tagged as Igatz or Igarashi Ran.
Japanese name: 五十嵐 藍 (Igarashi Ran)
Site name: IGATZ (イガッツ)
Pixiv nickname: いがらん (Igaran)
https://www.pixiv.net/users/62583
https://www.pixiv.net/stacc/igatz
https://twitter.com/igaran
https://twitter.com/intent/user?user_id=36399698
https://igatz.booth.pm
https://igaran.fanbox.cc
https://www.pixiv.net/fanbox/creator/62583
https://sketch.pixiv.net/@igatz
https://www.instagram.com/ranigarashi/
http://twitpic.com/photos/igaran
http://yfrog.com/user/igaran/photos