Crimson Hero!

This is definitely a shot in the dark... but this sports manga about a struggling girl volleyball team with a tough tomboy named Nobara as it's lead character really has me head over heels in love! ...But I don't think it's that popular with many other people. :(

It's really good in my opinion, and I don't usually like sports manga. It focuses mainly on the up and coming girls team, but there's a boys team too. I like it because the characters aren't all your typical really gorgeous manga characters. They seem more true to life... Although the main character has been getting more cutesy as she discovers her feminine side, and I'm not sure how I feel about it. :-/