Hitoshi who was ordered abstinence for one month for pregnancy from his wife.However, he couldn't stand it after half a month, and he secretly stopped masturbating, saying, "I have to shoot...".He is found by his sister-in-law Tsubasa...Tsubasa, who was frustrated with her husband and SEXless, was excited by his ascetic cock and she provoked him with a smile, "Isn't it full?"Hitoshi suppresses his libido with reason and somehow endures until the day of fertility SEX.Then Tsubasa visits again on the day of her pregnancy SEX.