Requesting artist confirmation.
I added nichi because the art looks similar to the artist's. Correct me if I tag the wrong artist.

You are correct. This is made by nichi.
I got a question, though. These images are from a gallery site, and not from the original distribution source, correct?

Yep. You want me to add source?

If you want to. I just want to confirm where you got it because the original file is actually much larger than this.