Artist, illustrator.
Japanese name: 五元 尋春 (Itsumoto Hiroharu)
The other names: 51番街の市長, 市長, 五元 or 尋春
Circle name: 51番街 (51-ban Gai)
Site name: 51番街瓦版
https://www.pixiv.net/users/344116
https://www.pixiv.net/stacc/i_hiroharu
https://twitter.com/fiftyone_st
https://twitter.com/intent/user?user_id=189402215
https://seiga.nicovideo.jp/user/illust/643826
https://www.nicovideo.jp/user/643826
https://nijie.info/members.php?id=8910
https://pawoo.net/@i_hiroharu
https://pawoo.net/web/accounts/412440
https://g4jh4s13.fanbox.cc
https://sketch.pixiv.net/@i_hiroharu
https://www.tinami.com/creator/profile/18391
https://51trash.tumblr.com
https://ask.fm/fiftyone_st
http://blog.livedoor.jp/i_hiroharu/
http://c10003581.circle.ms/oc/CircleProfile.aspx
http://c10040940.circle.ms/oc/CircleProfile.aspx
http://imagis.jp/user/5391
http://imagis.jp/user/5391/costypenow
http://imagis.jp/user/5391/diarylist
http://twpf.jp/fiftyone_st
http://pixiv.cc/i_hiroharu
http://pixiv.cc/i_hiroharu.51st
http://theinterviews.jp/itsumoto
http://p.twipple.jp/user/fiftyone_st
http://twitpic.com/photos/fiftyone_st
