Webcomic artist.
Nickname: 長谷川 シグリオ (Hasegawa Shigurio)
The other names: シグリオ (Shigurio) or シグマリオン (Sigmarion)
Circle & site name: レッドブルリアン王国
Old joint circle name: 微炭酸
https://www.pixiv.net/users/7320
https://www.pixiv.net/stacc/masked_sigma_hawfinch
https://twitter.com/PK_sigrio
https://twitter.com/sigmarion
https://twitter.com/intent/user?user_id=34996435
https://twitter.com/intent/user?user_id=1219432917010542592
https://hypersigmarion.booth.pm
https://seiga.nicovideo.jp/manga/list?user_id=2174351
https://seiga.nicovideo.jp/user/illust/2174351
https://www.nicovideo.jp/user/2174351
https://cqe5npqs.fanbox.cc
https://sketch.pixiv.net/@masked_sigma_hawfinch
http://portal.circle.ms/Circle/Index/10025405
http://www.melonbooks.com/index.php?main_page=maker_info&makers_id=MK0000017493
http://burst-sigmarion.blogspot.com
http://rookie.shonenjump.com/users/1609047349018327127