Artist.
Japanese name: 都賀 京助 (Tsuga Kyousuke)
The other names: つが or ツガ (Tsuga)
Circle name: 在り式 (Arishiki.)
Old site name: 有限方程式
https://www.pixiv.net/users/3014
https://www.pixiv.net/stacc/titsu
https://www.pixiv.net/stacc/tsuga
https://seiga.nicovideo.jp/user/illust/305031
http://com.nicovideo.jp/community/co50607
http://dic.nicovideo.jp/id/4146077
http://dic.nicovideo.jp/id/4657577
http://dic.nicovideo.jp/u/305031
https://www.nicovideo.jp/user/305031
https://pawoo.net/@tsuga
https://pawoo.net/web/accounts/239101
https://qwvsad34.fanbox.cc
https://sketch.pixiv.net/@tsuga
https://www.tinami.com/creator/profile/4900
http://mixi.jp/list_album.pl?id=4122044
http://mixi.jp/show_friend.pl?id=4122044
http://tsugak.sakura.ne.jp
http://www.stickam.jp/profile/komanishi
http://c10004428.circle.ms/oc/CircleProfile.aspx
http://c10042437.circle.ms/oc/CircleProfile.aspx
http://pixiv.cc/tsuga
https://twitter.com/tsuga_arishiki
http://twitpic.com/photos/tsuga_arishiki
http://yfrog.com/user/tsuga_arishiki/photos
