I came into this series just to find out why the girl who killed Issei killed him and how. I got the how, but not the why, but much to my surprise, I got a series that I actually find to be rather decent, and will watch alongside Guilty Crown, Rinne no Lagrange, Mirai Nikki, and (in Feb/Mar) Black Rock Shooter this season.
PROS
Issei is pretty alpha. Well, more alpha than Shoe (whose voice he shares).
Action scenes with some interesting CGI to go along with it.
Hot succubus/demon women.
Little to no censorship (save for the lightbeam).
Promising plot (in both respects).
CONS
The magical girl anime the pervs were watching was pretty strange.
I'm disappointed that the fallen angel man wasn't voiced by Fumihiko Tachiki.
I still don't know why Yuuma killed Issei, and the fact that it involves something called "Sacred Gear" doesn't bring my question even close to being answered.
This will be the first TNK anime I ever watch. I was hoping it would've been either Magical Meow Meow Taruto or L/R: Licensed by Royalty (The former I got as a hand-me-down from my sister; the second I got for my birthday), but I'd rather take fanservicey demon women over loli catgirls and the vaguely British any day.