START-420: 21-Day Stakeout with the Arrogant Big-Titted Female Boss in the Sweltering Heat. No Movement from the Suspect for Two Weeks—We Get Impatient and Spend the Final Three Days Sweating It Out, Fucking Hard and Full. Minamo Koisho

In the scorching summer, the male protagonist embarks on a 21-day stakeout investigation with his arrogant, busty female boss. The suspect remains inactive for the first two weeks, leaving the pair frustrated in a cramped space. In the final three days, the extreme heat drenches them in sweat, igniting their pent-up emotions. Casting aside restraint, they dive into intense physical coupling, transforming the mission into wild sex, with sweat and desire intertwining in a thorough, exhaustive frenzy.