My wife’s sister keeps squeezing out the thick sperm I’ve been saving up for trying to get pregnant, so my wife can’t get pregnant
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Shiro has been married for five years. He and his wife currently live together with his mother-in-law. His wife has a younger sister, Itsuha, who lives alone but is always spending time at their house.
Shiro’s mother-in-law constantly asks the couple when they will finally give her a grandchild. Itsuha works at a gynecology and obstetrics clinic, and she invites the couple to come in for some tests.
Shiro has a stronger-than-usual sex drive, while his wife only wants to have sex when there’s a chance she might get pregnant. Because of this, Shiro often has to relieve himself in the bathroom.
At the clinic, the doctor explains that there’s nothing wrong with his wife, but Shiro is producing little sperm. Since he has been masturbating two to three times a day, his count is low. The doctor advises Shiro to hold back until his wife’s ovulation days to ejaculate.
The problem is that Shiro’s intense sexual desire makes abstinence extremely difficult—and Itsuha becomes an obstacle during those days of restraint…