Okay, so having completed this anime I can say I almost enjoyed it... until it got to the end. It has the rather standard ecchi anime vibe and typical OVA problems. Every fight you are guaranteed to see a boob shot with the occasional unnecessary fan service shots... it definitely feels like a wannabe Ikkitousen in that regard.
The story had a rather plain and unoriginal plot revolving around a gem that would grant the user any wish she chooses, however, it comes at the price of requiring them to fight for the gem and if they lose the fight, they would go into the "dark realm." The dark realm is never really explained and once you get to the end of the series you understand why. Now, as I was saying, I started off semi-enjoying this anime until it got halfway through the last episode. Out of nowhere it had more twists than an M. Night Shyamalan movie and like the new M. Night Shyamalan movies, the twists sucked and made no sense.
As another reviewer said, the main character's sole drive of continuing on this battle for the Platonic Heart is to save a "friend" that she only met a day prior. I don't know about you but I wouldn't put my life on the line for someone I just met and have no attachment to. Now, the other characters that you meet are plain and you have no interest or feeling towards them what-so-ever. Everything about this anime screams mediocre, from the art style to the characters and most importantly the story. It seemed like whoever penned the story liked the idea behind Sekirei and wanted their own version of it, yet they failed horribly.
I cannot express my frustration with how this anime ended anymore without giving it away. So I recommend anyone that is interested in this anime and feels the need to watch it, to possibly stop halfway through the last episode. You'll certainly be saving yourself a headache in the end. Overall: 3/10