Ok let me start off by saying sekirei has lots of big tits, big tit-flashes, and tons of girls throwing themselves at random people because they provide them with an aphrodisiac or something.
That being said, i find one thing wrong with sekirei. The main character is gay.
Sekirei could honestly be a lot better of as a hentai. Honestly if its not obvious why it should be, then you probably didn't see the thousands of scenes with naked women. The fighting is ok, and the "love-story" is about as stupid as it can be.
Overall sekirei is a decent read, its more like wimpy kissxsis than a fighting manga, but its still decent. I'd recommend this to you if you liked.....well...i guess ikki tousen would be most similar.