I'll just get straight to the point: it's your typical ecchi/harem with magic and powers and such. This would've been a mediocre show if not for the two elements that blended together perfectly.
To start off, let's talk about the plot. Again, your typical ecchi/harem plot where an ordinary boy meets an extraordinary girl and they fight off anything that stands against them, all the while doing pervy stuff with other girls. I guess the only difference is that the MC already had a love interest in the beginning and fate is just cruel for toying with their relationship.
Heroines were disposable, in my opinion. The MC was uncommon, but not unique. I say this because he does stand out, but only because he has a familiar trait shared with a certain character from another ecchi/harem anime.
Yes, the plot wasn't that surprising, but the sound and animation was what caught my attention the most. At first, I thought the animation didn't fit in a series full of fanservice, but I was wrong. As I gradually got into the story, it didn't matter if it had fanservice anymore. The reason: The BGM. The background music really complimented the theme of the series. I saw the animation and the music blending together to make the perfect atmosphere. And I've only seen a few shows do that.
All in all, it's a decent anime. I wouldn't exactly say it's good because it still didn't catch my attention. If you're into magic and beautiful girls, then I recommend this anime. It's not a new anime, but it at least deserves a (trinity) seven.