The story so far is about a close friendship between two girls, Yano "Kase-san" Kasumi and Tōyama "Yuri" Reika. At the beginning of the story, they were in the same year of high school and they had met in middle school a few years ago. Kase-san (literally: the one with the long hair) was so impressed by Yuri's beauty that she couldn't stop thinking about her, which bothered Yuri at first. She thought Kase-san was just a strange, weird girl and tried to avoid her, but then they gradually became friends.