Having secured a stable life, the Shiina couple moved into a larger apartment than before. As they began adjusting to their new surroundings and started building relationships with neighbors, the neighboring housewives—envious of their strong marital bond—started making snide remarks toward Yuna, gradually escalating into severe harassment. Exhausted by these daily torments, Yuna became drawn to a revenge website she discovered by chance, solidifying a new resolve. Fueled by hatred, she began her actions as a villainess, targeting the husbands of her neighbors and seducing them as an act of retaliation.