This show explores a bunch of fictional days off for Kasumi Arimura. It's a collection of little disconnected stories, so you can hardly expect a cohesive plot of any sort. With that said, each episode has an interesting concept (ranging from visiting her mom to trying to get a jar of jam open to meeting a little girl).
The whole tone of the show fits very well with the subject of days off. It has a very relaxing, calm feel to it, and it's easy to settle into each episode. A surprising stand out is the music, which really helps to create the laid-back tone. The music of the short opening, was so pleasant, that I never skipped it (despite being the type of viewer to always skip intros).
Because of the varied nature of the episodes, each person will have their own favorite episodes, and some they didn't like as much. I'd argue the stand out episode is the one where Kasumi Arimura, struggling to get into her role as a mom, meets a little girl. It's heartwarming and the even though the episode is only around 25 minutes long, the story told is one of the most solid from a plot structure standpoint.
Just reading over the description of this show, it can be hard to know what to expect. So I'll keep it simple. If you like Kasumi Arimura, laid-back slice of life shows, or just want to try something a little different. Give this one a shot, you may find it surprisingly enjoyable.