Review of Absolute Duo
If it wasn't for the great animation and fighting scenes, I would've given this 6/10. Absolute Due isn't a great anime. It's not even a respectable harem. The protagonists are far too predictable. His roommate and their relationship is too typical. But the story and the struggles in it are realistic and interesting. The story is pretty good. The whole concept of Blazes as soul powers and Exceeds and Units and whatever doesn't quite make sense to me. But they try to explain it so it basically just depends on how much attention you're paying to Wikipedian speeches throughout the anime when you know you're sittingthere to watch some real ecchi scenes that's all.
If the concept was interesting, of course you would listen. But it's not. There's nothing special in fights. Swords. Rifle. Guns. Shield. Been there, done that.
Long story short, Absolute Duo is interesting enough to pass some quality time and not regret it. But I seriously doubt I would ever look out for the second season or rewatch it.