JAV BOY
Series : 羞恥男女が体の違いを全裸になって学習する質の高い授業を実践する共学〇校の保健体育
ZOZO-221 ShameHealth and Physical Education at a co-ed0 school that practices high quality classes where men and women learn the differences between their bodies in the nude2nd periodMale organ mechanicsEjaculation Mechanism Edition
ZOZO-220 男女同校的羞耻健康与体育教育》，第 1 期，《第二性特征与男女身体差异》，第 2 版，第 1 页。
