Jun, who came to visit from the countryside, ended up staying at his aunt Mako's house—the woman he's always secretly admired. The two met up outside and were heading home when suddenly caught in heavy rain, leaving them completely soaked. Once back at the house, Jun caught a glimpse of Mako changing out of her wet clothes. Overcome with excitement, he lunged at her. Mako, already emotionally charged due to her husband's long business trip, initially resists, but gradually gives in to Jun's passionate advances as their forbidden intimacy intensifies...!!