Conqueror Mmd

Original artist name is Kayama Suizan or かやま.
He had an iwara account and twitter what I knew but they are deleted now.
Some say that he is only on hiatus and will be back later.
Here is a list of his works, the links on the videos are pointing to his now closed iwara account but atleast you can see the thumb images and the video titles:
https://oreno3d.com/authors/960
This is the most what I could get, sorry about that. :(

Tell me the original artist

music sauce pls

Nice one