This series is basically a character introduction for the next season. The plot has nothing at all to do with the plot of Da Capo II second season. This is probably the worst of all the Da Capo shows. It would be worth watching only if you wanted to be familiar with the characters in the next season.
It can be hard to keep interest in the show during the middle of the series, it almost seemed as if it was going to turn into chobits for awhile. The way the main character acts through the entire show I also found extremely annoying. He shows no interest in any girls whatsoever, despite having a girlfriend and other girls all over him.
This show would get a lower score if it wasn't part of the Da Capo universe and didn't have a much better second season.