I'll make this short and straightforward because I was a bit sad to see that it has such a low rating, and I hope I can get you to give it a chance!
Let's talk about the art first, because that is arguably the most charming thing about this manga. It reminds me a little bit of est em, Hidaka Shoko and Yoneda Kou all mixed together: the characters are definitely masculine and very attractive in that manly, but not bara, way. Super gorgeous and good-looking. But then again, what constitutes as "good art" is very subjective. However, if you're a fan of the drawings done
by any of the three mangakas I mentioned, I can guarantee that you'll love this.
Plot-wise, the author managed to make the sexual tension between the brothers feel authentic and non-icky. Incest can either be really sexy or downright gross but she succeeded in creating an interesting relationship with their subtle flirtations, and the contrast between their attitudes towards each other - the younger brother is angsty and provocative, while the older brother is cool, mature and aggressive when it counts.
On the downside, the story was a bit too short, cutting out tons of opportunities for character development and more drama to unfold. Still, I highly enjoyed it and cannot wait to see more works from this author.