Maluetar said: It seems there are more than these 3 images on pixiv or somewhere but I can't find them
The first two are on Pixiv, the third one comes from the artist's blog (http://souko0001.sblo.jp/). I fixed the source fields accordingly, so you might want to copy them down, because the odds aren't high that any of them will be sticking around Danbooru for too terribly long.
Almost a shame; that smiling Yuugi on the previous page was fantastic. The rest of the comic, not so much.
