hypnohub.net/index.php?page=post&s=view&id=268585

I've been looking for the artist behind this image but can't seem to find if they have a twitter or a pixiv or something. There isn't much information besides a second image by the same artist hosted on the booru linked as the source. I've tried reverse searching both images, but that's unhelpful, and searching for the artist's name has also been a dead-end due to it being a seemingly somewhat common japanese word. Any idea where I can find this kyukyoku?

Artist is 究極のアヒル www.pixiv.net/en/users/105433100
The two posts are www.pixiv.net/en/artworks/118052615 and www.pixiv.net/en/artworks/118105978

PS Apparently I was the one who added source_request on that pic, and now I resolved it lol.

Thanks for finding the source :)
If you don't mind my asking, how'd you do it?

First I tried the reverse image search engines which yielded no results. Next I tried to search the artist name which again yielded no results.

I guessed that the source would be on pixiv from the Japanese text. I tried searching for a user on pixiv named kyukyoku, kyuukyoku, きゅうきょく which yielded no results. I then tried searching for a user named 究極 since it seems to be the unique kanji with that pronunciation. Fortunately the second result is the correct artist and a look through their gallery shows the artworks.

If they weren't the second result, you could probably use the guess that the images were not AI and the artstyle to quickly exclude the users. Luckily I didn't need to sift through pages of users and their galleries to find them.

You can also find the source through ascii2d.net reverse image search

Ah neat Japanese image search engine