Artist, illustrator.
Japanese name: 知己 夕子 (Chiki Yuuko)
The other names: 北都 (Hokuto), "hiyo" or "ｔｉｋｉ-u"
https://www.pixiv.net/users/1922198
https://www.pixiv.net/stacc/soranoniwa7
https://twitter.com/tikiu00uikit
https://twitter.com/intent/user?user_id=3905626592
https://seiga.nicovideo.jp/user/illust/9983694
http://www.nicovideo.jp/mylist/20094267
http://www.nicovideo.jp/mylist/34479036
https://www.nicovideo.jp/user/9983694
https://dz2cw91f.fanbox.cc
https://sketch.pixiv.net/@soranoniwa7
