Artist.
Japanese name: オキツグ or おきつぐ (Okitsugu)
Old name: ジャギ (Jaggi)
Circle name: おきのしま (Okinoshima)
https://www.pixiv.net/users/2119876
https://www.pixiv.net/stacc/tanuma-okitugu
https://twitter.com/okitugu1101
https://twitter.com/intent/user?user_id=580668193
https://seiga.nicovideo.jp/user/illust/13164967
http://com.nicovideo.jp/community/co2941463
https://www.nicovideo.jp/user/13164967
https://nijie.info/members.php?id=491953
https://sketch.pixiv.net/@tanuma-okitugu
https://ask.fm/okitugu1101
http://webcatalog.circle.ms/Perma/Circle/10343604
http://p.twipple.jp/user/okitugu1101
