Artist, illustrator.
Japanese name: 一二三 始 (Hifumi Hajime)
Old name: 煌潤 (Koujun)
Cirlce name: 一二三矢 (Hifumiya)
Old circle name: 一二三家
https://www.pixiv.net/users/225235
https://www.pixiv.net/stacc/mugenzero
https://twitter.com/_hihumi123_
https://twitter.com/intent/user?user_id=53895882
https://fantia.jp/fanclubs/5023
https://seiga.nicovideo.jp/user/illust/2513655
https://www.nicovideo.jp/user/2513655
https://pawoo.net/@hihumi123
https://pawoo.net/@mugenzero
https://pawoo.net/web/accounts/9738
https://pawoo.net/web/accounts/575750
https://hihumi123.fanbox.cc
https://www.pixiv.net/fanbox/creator/225235
https://sketch.pixiv.net/@mugenzero
https://skeb.jp/@_hihumi123_
https://privatter.net/u/_hihumi123_
https://www.stickam.jp/profile/koujun777
https://portal.circle.ms/Circle/Index/10245909
http://www14.atwiki.jp/gensouiri/pages/2619.html
https://enty.jp/_hihumi123_
https://marshmallow-qa.com/_hihumi123_
https://twitcasting.tv/_hihumi123_
https://twitter.com/_koujun_
http://com.nicovideo.jp/community/co1022374
http://p.twipple.jp/user/_koujun_
http://twitpic.com/photos/_koujun_
http://yfrog.com/user/_koujun_/photos
