We couldn't call it useless, but it may seem that there are more anime fans that are interested in bishounen anime or boys shounen anime.
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There are categories just like in regular shows, but it's usually catergorized in either Shojo or Shonen. Shojo is directed more towards girls, and shonen is more for guys. Shonen literally means boy, but I'm not sure about shojo.
I'm presuming you mean Psyren - the shonen manga by Toshiaki Iwashiro. In which case, there currently isn't an Anime adaptation of the manga, nor is there any news on one being made.
Shonen-ai means "boy love", and references manga/anime that contains romantic involvement between two guys. It tends to be more romantic and not very sexual. Yaoi is the more sexual version of shonen-ai, and is typically pornographic. Shonen-ai means "boy love", and references manga/anime that contains romantic involvement between two guys. It tends to be more romantic and not very sexual. Yaoi is the more sexual version of shonen-ai, and is typically pornographic.
I believe you're looking for Girls Bravo :)
Shonen Jump is for T 13+ Shonen Jump Advanced is fro T 16+