Nagisa Aoi is a young girl about to embark on a new chapter in her life. She's just transferred to a new all-girls high school, one of three in the area. At first, she's excited about the new friends, new surroundings, and new activities that await her. But she soon becomes confused and disoriented, particularly when she encounters Shizuma, a student representative whose striking beauty has Nagisa flustered.
Meanwhile, her new roommate Tamao shows her around and introduces her to the other colorful characters that inhabit the dorms. The complex relationships that bloom expose Nagisa to all the drama and passion that comes with this new territory.