I totally recommend this. Chapter 1 brought up a horrible first impression but it does get better, must read up to chapter 3 before deciding whether to drop it or not. And if you go to chapter 3 and are not impressed, I recommend reading to chapter 15. That was when I truly fell in love with this. Made me cry.
Also, i read from Reaper Scans, i did start by reading from Asura but I like how Reaper Scans puts in the light novel chapters at the end. Its cool and unique to Reaper Scans. They are both very good but to me Reaper Scans is a little bit better. Of course, if you like Asura more then that is fine, its your opinion.
So yeah, read it, its so cool and the story is quite unique as well. Also, don't forget chapter 15. Loved that chapter.