One day, her husband Takayuki was scheduled to go on a three-day business trip. At the same time, Takayuki's unemployed and reclusive brother came to Tokyo to look for a job, and he ended up spending three days and two nights alone with his younger brother's Hina, Hina. Hina was cheerful, beautiful, and chaste, but she was tricked by her brother-in-law and was fucked so hard that she eventually succumbed to pleasure. Hina who had been enjoying her happy newlywed life, was transformed into a lustful slut who couldn't live without cock...