"Sperm donation"……――This is the act of a general male donating sperm for couples struggling with fertility. 【First Couple】 A couple married for three years. "What about the timing method?" The husband recommends the timing method, which requires sexual intercourse with a sperm donor, while his wife, Kaho-san, is naturally not enthusiastic but is strongly persuaded by her husband and reluctantly agrees to try the timing method. 【Second Couple】 A couple married for two years. Wasa-san manages to persuade her reluctant husband to attempt direct sexual intercourse with a donor… she sprays out female ejaculation while transforming into a shamelessly lustful woman… 【Third Couple】 A couple married for four years. "If it ultimately leads to happiness, I think it's okay." The wife, Yuri-san, hopes for the timing method with the highest pregnancy rate. She experiences intense pleasure from long-awaited penetration and internal ejaculation… 【Fourth Couple】 A couple married for five years. Initially tense, Kannasan receives a massage but gradually her frustrated body aches and she begins to desire sexual intercourse with the donor. Sperm donation is usually just once. However, seemingly unsatisfied, Kannasan herself urges for 'more' and begs for sperm… What started as mere sperm donation turns into four hours of footage featuring four beautiful wives drowning in carnal desires.
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