It's not unnatural to desire romance just because you're married—in fact, such feelings are a natural human craving. Mana Sakura is a highly capable mother who perfectly balances work and housework. Yet, deep inside, there was something missing in her heart. Drawn to a younger, inexperienced lover, she finds herself unable to resist her desires and surrenders completely to him. Feeling, "I should have been satisfied with everything... yet something was lacking," she chooses to let him touch her however he wants, seeking to fill that void. Inside her soul swirls a secret longing she could never voice to anyone. Her impulsive actions become both an outlet for her stress and her only true pleasure.