https://www.pixiv.net/users/1177163
https://www.pixiv.net/stacc/kuzeuriu
https://twitter.com/kujoh_ryu
https://twitter.com/kuzeuriu
https://twitter.com/intent/user?user_id=133124499
https://twitter.com/intent/user?user_id=3092997030
https://nijie.info/members.php?id=17363
https://skeb.jp/@kujoh_ryu
https://kuzeuriu.tumblr.com
https://misskey.io/@kuzeuriu
https://misskey.io/users/9dborx3ugl
https://www.facebook.com/ryu.kujoh
https://portal.circle.ms/Circle/Index/13026158