https://www.pixiv.net/users/804866
https://www.pixiv.net/stacc/y-u-k-i-k-o
https://twitter.com/kiddyfactory
https://twitter.com/intent/user?user_id=33919574
https://www.artstation.com/yukikotsu
https://www.tinami.com/creator/profile/8708
http://yukjap.blogspot.com