The first volume of this series was my first real exposure to Kyuugou. I had read another doujin of theirs without thinking that it was anything special, but this story most certainly is. The drawing is amazingly fluid and crisp, and while Ed and Roy are not quite the same as in the manga, Kyuugou's style is close enough to the original, and beautiful enough in its own right, that it doesn't matter at all. In fact, which I read FMA fanfiction, especially those taking place in Germany, it is Kyuugou's gorgeous art that comes to mind. (And Roy is particularly heart-thumping, imo.)
What elevates this doujin series to a 10 is its combination of achingly portrayed emotion and plot. Kyuugou is excellent at portraying emotion in their drawings of characters. And while there isn't quite as much plot as a normal manga, it isn't pwp either. There are terribly awesome cliffhangers and little clever twists in the story, and the premise, while not completely original, is very well pulled off.
I found the first volume years ago, and ever since then I have had a slow-burning fire to find out what happens later on. Do Roy and Ed ever have a true relationship, one with trust and without all the secrets that consume them? I guess we won't ever find out, but I'm glad I read this anyway. The art is beautiful, the plot is interesting and the emotions of the characters are complex and engrossing... Like a previous reviewer said, it is definitely "bittersweet," in more ways than one. If you like FMA and RoyEd, this is not something you want to pass up. And if you know FMA and aren't sure about RoyEd, I would recommend you try it out anyway. 🙂