I'm not sure why MAL didn't tag this also as harem, but it probably deserves that tag too.
So I guess I'll start off with the part that I enjoyed the most from this anime, and it was the art style. Since I'm not an art person, I'm not sure if I'm even using that terminology correctly, but I liked the character designs and how everything else is drawn in general and that was the biggest reason I kept watching.
The OST was good, there's one track off the top of my head that I really like, but in general while watching I never thought to myself that I disliked the OST.
My one main gripe was that the main character kept getting his limelight stolen from him. I don't need the main character to save the day all by himself all the time, but it'd be nice if he would beat at least one bad guy by himself.