新婚の七緒は、夫婦で広めの新居を買い、旦那の父親も同居することになった。気さくに話しかけてくれるお義父さんで、一緒に住むのも問題ないと思っていたが…七緒のHカップ巨乳の谷間やニットの膨らみを間近で見せつけられた義父は、邪な感情を抱いていくように…！ある日、ベッドに眠る七緒の胸をこっそり触り、我慢できずに襲ってしまう！一度過ちを犯してしまえば、もう後戻りできないと開き直った義父の要求はエスカレートしていき、町内会のオヤジたちにも巨乳嫁をおすそ分けしていくように―

Newlywed Nanao and her husband bought a spacious new home, and her husband's father also moved in. Her father-in-law was friendly and easy to talk to, and she thought living together wouldn't be a problem… but when her father-in-law saw Nanao's H-cup breasts and the curves of her knitwear up close, he began to harbor wicked thoughts…! One day, he secretly touched Nanao's breasts while she slept in bed, and unable to control himself, he assaulted her! Once he had made this mistake, there was no turning back, and his demands escalated, and he even began to share his busty daughter-in-law with the men in the neighborhood association—