A series in which an older sister who once wore bloomers when she was a student confesses her erotic acts at the time. This time, Kana-chan, a slender and beautiful older sister. In her classes, she said that she wore bloomers until the fourth grade of elementary school, and that she wore it as an inner under her school uniform until ● school students. While wearing such bloomers, she immerses herself in bloomers play while talking about the naughty acts she was secretly doing.
