Rinko Souma, a timid and unremarkable person, longs for reciprocated love and intimacy. However, her classmate Souta Hisakawa, who is striking and admired by many, seems out of her league. Despite this, Rinko often indulges in delusional fantasies about Hisakawa. One day, a mysterious proprietor of an adult shop offers her an unusual proposition - to "rent" her crush's affections for a limited time. Desperate and optimistic, Rinko jumps at the chance to achieve her romantic aspirations.
For 72 hours, Rinko experiences the perfect relationship she has always dreamed of. However, as the due date of the rental service approaches, she becomes increasingly desperate to find a way to keep Hisakawa's love forever.
