https://www.pixiv.net/users/465458
https://www.pixiv.net/stacc/hisahiko
https://twitter.com/hisahikoT
https://twitter.com/intent/user?user_id=911864258
https://purindou.fanbox.cc
http://www.doujinshi.org/browse/author/20243/
http://doujinshi.mugimugi.org/browse/author/20243/Hisahiko/
http://www5c.biglobe.ne.jp/valalpa/
https://www5c.biglobe.ne.jp/~valalpa/
