Artist, illustrator.
Japanese name: 山本四角 (Yamamoto Shikaku)
The other name: 四角 (Shikaku)
Site name: YMSKK
https://www.pixiv.net/users/13246007
https://www.pixiv.net/stacc/ymskk
https://twitter.com/s_k_k
https://twitter.com/intent/user?user_id=93092917
https://pawoo.net/@s_k_k
https://pawoo.net/web/accounts/24600
https://s-k-k.fanbox.cc
https://www.pixiv.net/fanbox/creator/13246007
https://sketch.pixiv.net/@ymskk
https://ymskk.tumblr.com
http://soundcloud.com/shikaku-yamamoto
