I didn't expect much from this series. I was really just looking for something to pass the time with as well as a decent anime. Well, my expectations were COMPLETLY wrong. I rushed throught it in three days (somthing I only do with VERY good animes) and was eager as to what would happen next. The story was great and the characters were real and I was able to relate to them. There are things to figure out and misteries about Karen, Mina, and Miku's past are uncovered. I'd say a good anime for mature people because it does contain some fan-service, but overall itwas very good and one of my favorite animes of all time.