incest, sara toriya.

His mother-in-law, Sara, learns that his son Masato is suffering from virginity and leads him to teach a woman by using his own body. The masato is made of pizuri, which is not bound by the 100cm H-cup explosive milk. When Masato's brother Tatsuya saw it, he asked Sara to let him graduate from the school. Write down the thoughts of the Dotei brothers with explosive milk that shakes in a hurry! Who can graduate from the virginity?