Twitter account: https://twitter.com/Kamikitayotsuba
Pixiv account:http://www.pixiv.net/member.php?id=23262207
https://www.pixiv.net/users/13255462
https://www.pixiv.net/users/16412280
https://www.pixiv.net/users/23262207
https://www.pixiv.net/stacc/gumin2355
https://www.pixiv.net/stacc/kamikitayotsuba
https://www.pixiv.net/stacc/kurumin2355
https://twitter.com/Kamikitayotsuba
https://twitter.com/coffee_mame2355
https://twitter.com/gumin2355
https://twitter.com/yotsuba5586
https://twitter.com/intent/user?user_id=2863582676
https://twitter.com/intent/user?user_id=4196277372
https://twitter.com/intent/user?user_id=837527935502340096
https://twitter.com/intent/user?user_id=1421740585686167556
https://fantia.jp/yotsuba-club
https://pawoo.net/@Yotuba
https://pawoo.net/web/accounts/303035
https://yotsuba.fanbox.cc
https://sketch.pixiv.net/@kamikitayotsuba
https://sketch.pixiv.net/@kurumin2355