Eager to break free from his solitary life and lose his virginity, Yuki signed up for a system akin to open compensated dating that was set up to combat this societal problem. To his surprise, his doorbell rang just half a minute later and was shocked when the girl who showed up was his class idol Sakurako, who he admired greatly. She gladly agreed to be lovey-dovey with him in return for a place to stay and free food.
However, their outwardly wholesome partnership got off to a rocky start since neither had any experience in love nor staying over with the other sex. They invited other girls to the lessen the awkwardness when they are alone together, and gradually began to like their relationship amidst the lively days.