On this day, two students transferred to the class. One is Chiyo Mihama (voiced by Tomoko Kaneda), who skipped a grade. She has a genius-level IQ that does not match her cute appearance, and an EQ that does not match her IQ. The other is Ayumu Kasuga (voiced by Yuki Matsuoka), who is dull and cute. Soon, they became friends with their classmates. Tomoya Takino (voiced by Chieko Higuchi) is called Achi. While he is aggressive and aggressive, he is surprisingly simple and naive. Sakaki (voiced by Yu Asakawa), who looks calm and mature, has zero resistance to all the cute things in the world. Koyomi Mizuhara (voiced by Rie Tanaka) is Achi's childhood playmate. With excellent grades, she has undoubtedly become Achi's challenge target. Add a lively class teacher Yukari Tanizaki (voiced by Akiko Hiramatsu), and these three years of high school life will definitely be colorful. The animation is adapted from the four-frame comic of the same name by cartoonist Azuma Kiyohiko. It depicts the daily life of female high school students and presents a lovely, warm and interesting world.