In the name of trying to keep up that “cultural exchange” theme, I’ll introduce an appropriate member of one of our favorite literary genres, the Touhou doujinshi.
New Hori-ZUN 2, 44p, by circle ddiction (http://ddiction.org/index_en.html)
New Hori-ZUN 2, part of a series whose first volume I totally forgot to ask my bro @nforza26 to send me, is an attempt at an exciting and highly educational Touhou-themed English textbook series based on New Horizon, an actual exciting and highly-educational English textbook I am completely unfamiliar with.
As you may recognize from some of the e-famous artist names, several of the authors of this book are actually American, which is completely different from being Japanese, and yet it is one of the higher quality doujin I have seen!
The authors have mastered difficult doujin techniques such as 4komas, Arial, having a circle name even though you’re the only member of the circle, and Yume Nikki references.
However, as far as textbooks go it’s a little undirected. The text (the usual character comedy Touhou lends itself to, although decent enough) is more complex than volume 1, but how will the reader know if he understands all of it? I think there should be more exercises. Of course, the less useful it is the more like the actual Japanese school system it is, so either way they win.
You can find this circle at the upcoming Winter Comiket. In the meantime, the authors can be found on the Internet.
Fushigi no kuni no Marisa (Marisa in Wonderland), by circle COSMIC FORGE (http://www.cosmicforge.net/)
Available via mail order from Manga Pal!
(Japanese translation available at tsurupeta.info)