I simply adored this anime. It had all the elements one could want! It was realistic, yet supernatural. The characters were all wonderful and I loved the detail that was put into each character. Their personalities were great, too! It's rare to find a story that has a great plot as well as great character. Yozakura Quartet is a wonderful blend of the two! And, to make it even better, the manga is amazing, too!
One title. Two options. Both are epic win.
My advice would be to watch the first episode. If you can get into that first episode, you'll love the rest of the series. That's what got me hooked. My college's anime club played the first episode and I loved it so much I had to look it up on my own. Do that and you'll know if this anime is right for you.