A few years into their marriage, Shieri falls into self-loathing for being unable to respond to her husband's advances. One day, after her strained relationship with her father-in-law is discovered, she decides to consult him... Upon learning of her inner turmoil, her father-in-law suggests, 'Then you should show a different side.' He encourages the shy Shieri to be more proactive. From that day on, her father-in-law's 'education' involves manipulating her body and stirring her sense of shame with lewd acts... Though confused, Shieri gradually begins to awaken sexually, prompting her father-in-law to order her to perform a certain action...
