Due to marrying a husband much older than herself, Tsubasa's marital life has been completely neglected due to her husband's performance. Just then, her brother-in-law came up to Tokyo and stayed for several days. Since the wedding, Tsubasa's charm had her brother-in-law harboring impure thoughts, and he accidentally caught sight of her masturbating. Unable to hold back, he pressed his advances, and her unsatisfied body accepted him. From then on, they indulged in each other's lust, responding to her brother-in-law's prowess.
