After being cast out by her sister, 20-year-old Saki Michino roams the streets until she encounters a compassionate stranger named Renta Ota who offers her shelter after she collapses near his place. Saki is no ordinary woman; she is a succubus, and her uncontrollable pheromones drive men into a frenzy unless she feeds on their 'essence.' Her refusal to seek a donor led to her expulsion, as she desires a genuine emotional connection. Saki's potent pheromones create a host of challenges for Renta, who grapples with constant arousal due to her presence. Amidst this unconventional living arrangement, they might discover the companionship they've both been seeking all along.