IMO:
yes we know that this anime is incest. But to think that the sister, Kirino really pissed me so much with her attitude that completely turns her brother to an M~slave. This anime is pretty relaxing with all those comic and sister - brother arguments.
What i could say is that, it's quite good for an anime of this type. most animes got me really boring or had me dropped at the middle. But this one's relaxing. Even though some episodes would really seem repetitive, it's good on it's own.
What i could really say is that, the OP is really really GOOD. I like it. ClariS