Definitely interested in that ebook. I'd pick up the paper version, even, if it was available where I am. I'm not familiar with Fummy as a creator, but I assume that they are Japanese? Therefore, the Diary of Ellen would likely be in Japanese too, huh? I'd love to read it. It's not a very story-heavy game, so I think it'd be an interesting perspective.

You should be able to find the Japanese paperback version on Amazon. It was translated into Chinese so I got mine from a bookstore. Dunno if it was ever published in English, but I think vgperson put up a fan translation on their website.

yeah it's on Amazon
https://www.amazon.co.jp/dp/4047291714