As there's a lack of a synopsis here, I'll give you a quick heads-up: Two main characters, one a fifth-grade elementary schooler who looks like an adult, and a second-year high schooler (apparently) who looks like an elementary schooler, and is the older sister of the former. That's all you need to know to understand this. If you wanna know more, check the page of the first season. With that said, it's a shame this anime took kind of a dive. It feels like a different team worked on this, as the art seems completely different from the first two seasons, and the backgrounds are abit more gloomy and lack the colorfulness the former seasons had. I was relieved the casting for the VAs hasn't changed, otherwise this would've gotten a lower rating from me than it has now.

The "story" is still the same, but with the introduction of a few more characters, giving us more of a variety of situations. The newcomers are just as fun and enjoyable, but lack proper substance. The main characters are still the same, and so are the side characters. There does seem to be an improvement in the overall storyline, albeit just on the relationship front.

Like I said before, the art has really changed. The shading and overall animation is simpler, and the backgrounds are not as colorful and "detailed" like the previous seasons (although the backgrounds were never really detailed to begin with, but they managed to make it look even less detailed). The sound and music has stayed the same, with no OP and a short ED like usual. If the art didn't change like that, this would've gotten the same rating from me as the other seasons, and I probably wouldn't have even written a review. But, with the small budget this anime probably had, it isn't all that surprising.

In conclusion, if you're a fan of the series, you can watch this and still have fun. Although the art way have taken a step backward, the characters are still there, and they're still fun. And if they ever manage to make a fourth season, I'll probably watch it too. It's sometimes just the idea of an anime that keeps you entertained, as long as the characters are interesting, the scenes are funny and as long as it's still enjoyable.