A series in which a woman who wore bloomers during her school days confesses her erotic acts at the time. - This time, Mayu-chan is a beautiful girl with G-cup big breasts that you can see even from her gym clothes. - She wore bloomers to class until the third grade of elementary school, and even after bloomers were abolished, even high school students wore them as innerwear for their school uniform skirts. - She immerses herself in bloomer play while talking about the naughty acts she secretly did while wearing those bloomers.