Takashi, a husband, is in high spirits as he reports to his wife that he has received his long-awaited bonus. His wife is returning to her parents' home in preparation for the birth of her child, but she promises to use her bonus wisely for their child. However, it has been a while since they last had sex, and Takashi, now alone for the first time in a while, feels elated, as if he is single again. Then, he finds Yuuka, an exquisite delivery health girl, on an adult entertainment website. She is beautiful, affectionate, and her play is full of love, and Takashi is instantly smitten. Before he knows it, their dates have been extended and they are spending time together as if they were living together. Little does he know that his precious bonus has run out...