This is karochii_(mochiya)'s work. Specifically, this is the cover and back of the first book of his doujin series Himegoto (Sad Panda warning).

Edit: existing uploads of this image here.

FJH said:

This is karochii_(mochiya)'s work. Specifically, this is the cover and back of the first book of his doujin series Himegoto (Sad Panda warning).

Edit: existing uploads of this image here.

It's unusual that this artist uploaded another artist works....