After the husband's company went bankrupt, the Yamaishi couple moved in with his father-in-law, Mineo. Although Mineo willingly took them in, he was worried that his unending libido might cause him to suddenly assault Kotone. However, if that were the case, 'Why worry when you can take action?' he began to plot to make her his own... Falling for the seemingly kind Mineo's scheme, Kotone is raped. His insatiable lust doesn't end with just one time...
