Taken from Riboninfo:

Karin is a student of an institute that's very strict, but then leaves class to be dedicated to street dance in a club called "Free Square," that is in fact, one of the best. One day while dancing with her friends a group of boys who play basketball arrive and Karin falls in love at first sight with their leader, Yuuma Seta. Some thugs want to be in the club and Yuuma challenges them to a game of basketball, but the thugs are cheating...

Side stories in:
Vol. 1 Pop n' Eight Beat

Vol. 2 Hug! (FUJIWARA Yuka)
Haruka has a dog... A dog she ABSOLUTELY loves! Every single day, she gives him hugs and kisses~! Upon entering high school, she suddenly meets a boy... with the same name as her dog... looks like her dog... and acts like her dog in every way possible! Can Haruka resist the temptation of wanting to hug and kiss him like she does to her dog?