Anyone following Sphere League( japanese idol futsal)?

Out of curosity, anyone here following the female futsal competitions between the japanese ent/idol management companies ? I have been following for almost 2 years and it had now grown from a few teams to now more than 10 teams in Sphere league. Teams are made up of female artistes, singers , models from hello project, avex, horipro. More details can be found in http://www.sphereleague.com/