What if you met someone who is your complete opposite in both appearance and personality? Misaki is a serious and reliable high school student, and Shizuka is a cheerful and clumsy gal. These two opposites with no common ground meet by chance, but when they are drawn to each other's unique qualities, they grow closer. Sports festivals, summer vacation, cultural festivals, university entrance exams, dreams for the future... This is the story of two high school students who meet their irreplaceable best friend amidst the hectic daily lives of high school students.