Nobue Itoh (left in the picture), her younger sister Chika and 3 friends. As Aria in the previous post this is too slice of life show, maybe focus more to comedy and characters are cute girls.
It was enjoyable. Some episodes were less funny, but better ones compensated that. OP is very good, ED good.
Overall pretty funny. If you like clever jokes about life in general and light lolicon stuff don't bother you (i know some people who don't like it) watch this.
Rating: 8 of 10