In the cozy cafe managed by three alluring sisters, Masaru begins his part-time role under Kaede's guidance, quickly finding himself drawn closer to the seductive Nanami and Kurumi. When Kaede departs for a month-long internship and leaves him in charge, their shared shifts spark intimate tensions, with Kurumi confessing her virgin longing and Masaru savoring the opportunity for sensual explorations. Nanami soon falls under the same spell, fueling jealous rivalries as the trio edges toward a steamy harem connection filled with teasing blow job promises and creampie temptations.