At first I thought it's needless. Just the repeat of the main story with a so much worse graphic. I had to stop watching for a while to get used to it. After you get used to the graphics and watch a few episodes, you will notice that yes, this is the same story, but from a different point of view. So many people give it a bad review just because they can't handle it separately from the main series, but if you forget about the main story, of course not completly because you need the knowledge from it to completly understand the happenings, andthink of it seperatly, as a whole new serie, than you even can call it good. Because it's still interesting and can give new joy to the original. As a stand-alone, it could score pretty high, it's the need to compare them that really lowers the score. And of course the the graphic, its reall really bad. At least for the male lead, the others don't have big differences, but Tatsuya's... So yes, it can be really enjoyable, but you have to take it with a grain of salt.