Artist, illustrator.
Pen-name: イセ川 ヤスタカ (Isekawa Yasutaka)
Handle: ななしな (Nanashina)
The other name: 七c七 (Nanashina)
Circle & site name: N7747
Old site name: NN.works Ver.7747(仮)
Joint circle name: 抹茶七品目 (Maccha Nanahinmoku) (the other members: Fuzuki Maccha (Mattya) and Fumi (Shippou Kaede))
https://www.pixiv.net/users/274594
https://www.pixiv.net/stacc/pgq7747
https://twitter.com/_nanashina_
https://twitter.com/intent/user?user_id=214037461
https://nanashina7747.booth.pm
https://seiga.nicovideo.jp/user/illust/5131897
https://www.nicovideo.jp/user/5131897
https://pawoo.net/@nanasina
https://pawoo.net/web/accounts/58234
https://isegawa7747.fanbox.cc
https://sketch.pixiv.net/@pgq7747
https://www.tinami.com/creator/profile/22990
https://nanashina.tumblr.com
http://qgp7747.blog.fc2.com
https://www.instagram.com/isegawa_7747/
http://www.stickam.jp/profile/nanasina7747
http://portal.circle.ms/Circle/Index/10067040
http://p.twipple.jp/user/_nanashina_
http://twitpic.com/photos/_nanashina_
http://yfrog.com/user/_nanashina_/photos
