During the summer vacation, college student Erina returned to her hometown. Sweating profusely from the intense heat, Erina found out that the bath at home was broken. Following her mother's suggestion, she went to borrow a bath from her grandfather's house behind theirs. Overwhelmed by Erina's sensual growth after so long, her grandfather couldn't suppress his surging desires and attacked her impulsively. Then he said, 'In this rural area, if even a slight rumor spreads, your moms won't be able to go out either...'.
