Suddenly, her husband's younger brother from next door showed up and asked to stay at her place for a couple of days. That night, she embraced her husband passionately, pleasuring him orally until he quickly reached climax, leaving Rikako feeling unsatisfied. Secretly, she sneaked into the bathroom to use her hidden adult vibrator, indulging in masturbation. At that moment, she unexpectedly ran into her brother-in-law, who began fiercely groping her large breasts. Her engorged breasts continued to leak milk as Rikako, overwhelmed by arousal, impulsively took her brother-in-law's cock into her mouth. That fleeting moment of passion marked the beginning of a new, forbidden relationship.