仕事に厳しい鬼上司・塔子の下で働くハジメ。普段から塔子に良い感情を抱いてなかったが、密かに彼女自身には欲情していたのだが…。出張で急遽泊りになった際、相部屋になってしまった2人。そして妊活中の話題になると、酔った勢いもあって「僕の子種、提供しましょうか？」と押し倒してしまう。義務的なSEXしかしてこなかった塔子はケモノのように激しく求めて来る彼の肉棒に、幾度もイカされて…。

Hajime works under his strict and demanding boss, Touko. He never had a good opinion of Touko, but secretly lusted after her… When he had to stay overnight on a business trip, the two ended up sharing a room. When the topic of trying to conceive came up, he, fueled by alcohol, pushed her down and asked, "Shall I offer you my sperm?" Touko, who had only ever had obligatory sex, was driven wild by his animalistic, passionate advances, and came over and over again…