Hatsukoi Limited.

Being an adolescent girl is just one problem after another. Middle-schooler Arihara Ayumi receives a note from a high-schooler, a very large and intimidating boy, Zaitsu Misao, asking her out. Frightened and intrigued, she doesn't know what to do! This has been described as a series of vignettes in the everyday lives of a junior high school girl named Ayumi and seven other junior high and high school girls, as they fall in and out of love and deal with girl issues. Authored by Mizuki Kawashita, (who also created the story for Ichigo 100%,) this manga series appeared in Shueisha's Weekly Shonen Jump magazine.