https://www.pixiv.net/users/283954
https://www.pixiv.net/stacc/pirobolos
https://twitter.com/pirobeelzebub
https://twitter.com/intent/user?user_id=954365360056102913
https://sketch.pixiv.net/@pirobolos
http://eliminatorjr.blog.fc2.com
http://doujinshi.mugimugi.org/browse/author/37769/Piroshi/
https://portal.circle.ms/Circle/Index/10014419