20th Century Boy and Girl is the perfect, light, fluffy romantic comedy you need for those hard days.
The plot is fairly basic and frankly has little conflicts beyond the most common ones associated with having a famous actress as the female lead. The entire story revolves around the main romance and the four friends overcoming common troubles together. And while there is some drag (the story is fairly slow paced all things considered and really the second story line involving Anthony wasn't entirely needed) the characters are fun and breezy enough to make for an enjoyable watch.
The biggest flaw is that the show is a tad too breezy, lacking a bit of heft to weigh it down or give the show purpose. But for those days where you want something a bit mindless, fun and easy, this is the perfect show.