Serching these touhou characters

[Son of saneko]

*Google translate warning

Hello, as the title says, I am looking for these characters from the video I leave below:

https://rule34video.com/videos/3101949/touhou-futa/

Does anyone know where I can download this characters?
I search them in a lot of pages and i found absolutely nothing and it's not the first video where i see them

Thanks in advance