Board Thread:General Discussion/@comment-100.10.51.235-20190209153014/@comment-27045866-20190209153337

http://kurobine.sakura.ne.jp/

Enty is a Japanese pay site with a lot of making ofs and extra art:

https://enty.jp/en/kc

He also has an english language Patreon:

https://www.patreon.com/MGE/overview

And while not official, MGR is the English fansite that is translating his material with KCs permission but requires free registration:

http://monstergirlsredux.com/index.php