This anime is only a very tiny part of a shounen-ai (boy's love) manga (paperback comic) series. It was made before the manga was finished, so is only 13 episodes, only going through about volume 6 of the manga.
The anime is actually very good, though the dubbed version is an atrocity - a subtitled version is far superior, and actually has much better dialogue and far better voice acting.
For those who complain about the sakura petals, (cherry blossom petals), or the fact that this is "gay" - yes, it is a shounen-ai series, and is meant to be so. Shounen-ai is a highly popular genre in Japan.