Masashi Kitazawa, high school 2nd-year, has a trauma: he was fat when he was a kid!Kitazawa, who diligently dieted and worked hard in middle school, grew up to be a handsome man and was supposed to lead a peaceful school life, but… In the new semester of high school, handsome men and beautiful girls have gathered in Kitazawas 2nd year class A for some reason. Whats more, he received a secret invitation from Ayame Yagyu, the most beautiful girl in her grade…!?