During a mysterious outbreak of a lust-inducing virus, Yui finds herself entangled in a web of insatiable desire with Rei and other infected strangers. Overwhelmed by her awakened cravings, she succumbs to an unending cascade of intimate encounters. Each feverish connection drives her deeper into the carnal chain of events, where pleasure intertwines with urgency, and physical bonds expose the raw vulnerability and volatile passion of her new reality.