When we were young, some of you might have experienced playing 'doctor' with sisters, younger siblings, or neighborhood girls. Do you remember the excitement from that time? This young brother and sister aren't satisfied with just 'playing doctor'; they regularly engage in 'soap play.' Mei, who loves her big brother so much and desperately wants to have sex with him, sets up a makeshift soapland in her own room. Opening for business late at night after their parents have gone to sleep, she offers an all-you-can-shoot course with every option included until morning, indulging in forbidden incestuous sibling relations.
