本片是一部韩国片，上映于2021-09-01，由导演，由Ye Ri主演。
剧情简介：Hyeonchang and Yoonji have sex for the first time to celebrate the 1st anniversary of their relationship. Because both of them are clumsy, sex only hurts. They remain scars to each other. Hyeonchang is suffering. With the introduction of a local senior, he enrolls in Cheongbul academy, which teaches the skills of sex. Hyeonchang learns several skills and graduates. Meet Yunji again and enjoy the sex he learned at Cheongbul Academy.
外文名：젖 큰 자매들
地区：韩国
演员：Ye Ri
