Serious son-in-law 'Kousuke' has been attracted to the big breasts of his mother-in-law 'Ryoka' for a long time. One day when I was to spend time with my girlfriend Ryoka for the first time, I planned to put her to sleep with sleeping pills and masturbate with her big tits, but I was noticed right after she ejaculated. Suzuka forgives Kousuke for a temporary mistake, but Suzuka's kindness makes Kousuke unable to suppress her distorted sexual love...
