comment #21378 Have you read the manga? It really is better, I'd say. Not only for the art, but the comedy is a little more unrestrained. Mostly they are pretty close to one another, but I think the little touches here and there that the anim skips past really make a difference. The anime also seems somewhat more focused on the sis-con aspect...
comment #21444 True the manga also contains a certain semi-sexual focus on Chokoto, but as it progresses this becomes much less prevailent and ends up being limited to small bits of fanservice which are more plain loli/moe without the leaning on her relationship with her "brother". Her entire role in the manga diminishes quite a bit on the whole actually compared to the first volume. The anime, so far, does not seem that it will steer away from the sis-kon theme...