The story is simple. A brother and a sister are too different from each other and they don't get along, until the brother comes across one of his sister's eroge games and since then, his sister becomes a big part of his life. The story may be simple, but it is very entertaining since it explains things about being an otaku and what they usually do. And in this anime, they used a different approach to make it very fun to watch and to keep your eyes glued to the screen.
The art is good. I see no animation error or such, and the appearance of the characters define their overall personality. I don't have problem with the art at all. But it isn't the gem of this anime. The sounds are ok too. I don't actually pay much attention to it, but I did love to OP theme and the many ending themes.
The characters. Oh, I love some of them and I hate some of them. Why? Because of the kind of people they are. Kyousuke is one of the two main characters who is your typical average guy. But he isn't plain in a way that it's boring. In fact, I can't help but sympathize with him every time he gets bullied by his sister. Oh, Kirino. As much as she's the titular character, I have to admit she is not a little sister that I would like to have, at all. I'm sure a lot thinks the same. There are a lot of little sisters in anime who are portrayed as tsundere, but she is just too extreme that her personality borders on being more than just bitchy.
Her best friend, Ayase is also kind of irritating once you get to know the kind of person she really is. While Ayase may seem very sweet and gentle at first, you come to know that she is the kind of person who has little tolerance for otakus and still holds on the belief that her friend is not one. She couldn't even bring herself to, at the very least, accept that Kirino is an otaku and just put up with it if she really hates otakus that much.
The others are good. I love Kuroneko. She is a thousand times, no - a million times better than Kirino. She may be intense in terms of the way she talks and acts, but unlike Kirino, she is not mean. She just likes to tease people for amusement's sake. She is rather, misunderstood at times. But deep down, she is kind and caring and is kind of insecure.
To sum it up, OreImo is a very good anime. It's a great of comedy, slice-of-life (otaku-wise), drama, and romance. Even though it may have its share of particularly nerve-grating characters, it can be overlooked by all the other elements of the anime. I assure to those who read this that it's a very fun watch.
