This anime just as the beginnng sequence says it is. It's about what happens in three ordinary sister's everyday lives. Don't expect too much.
Story: There isn't really much of a plot to this. It's about three sister that have very different personalities and what they go through in school, at home, with guys, things of that nature. It's the very definition of slice of life. You really shouldn't go into this anme expecting anything more than comedy. There's not much in the terms of drama, romance, or anything of that sort.
Art: The animation quality is by far not top notch. I mean, its not utterly unbearable. The character designs match perfectly with their personality. The problem is that there's not enough detail in the backgrounds, but since it's just an anime for laughs, it doesn't really matter too much.
Sound: The opening and ending fit perfectly with the series. Very catchy and leading into what you are about to watch. The voices sound exatly like their personalities show it should. Kana's voice is very sarcastic and naive when it comes to tricks. Chiaka's voice is dead-panned just like the comments are suppose to be. And Haruka has the very sweet caring voice.
Character: The characters were quite unique. The sisters are all drastically different from one another, but so are the rest of the characters. Watching them interact is priceless. There's sweet ones, mean ones, brainless ones, perverted ones, love struck ones. They're all different, but they're all strange.
Enjoyment: I've never seen an anime like this. I thought a few of the scenes were just pointless, but they were suppose to be because it's jst s pointless its funny, but to me it's not. It's one of the best comedies I've seen. It's entertaining to watch how some simple misunderstandings turn into such outrageous things.
Overall, I think that if you enjoy comedy anime or anime with no real story to tell, you'll probably like this one.