Nanami, who is about to get married, is extremely jealous when she finds out that young female employees are also participating in the training camp where her fiance works. Nanami comes up with a plan and whispers in his ear, "I don't want you to be all lovey-dovey with the girls at training, so I'm going to milk every last drop of your sperm so you can't think about other girls," and she milks his semen with passionate kisses and close hip movements until his balls are empty. The semen-milking sex that started on Sunday morning doesn't end in one day, and continues right up until the training begins...!!