I used to be in love with my husband's younger brother, Kyosuke. My husband and Kyosuke had not gotten along since childhood, but they worked together at my father-in-law's company. When I joined the company, I supported my husband's work while Kyosuke taught me step by step how to do the work. But eventually the two of them broke up and Kyosuke left. Ten years later, my feelings for the past were brought back to life in an unexpected way. Kyosuke's forceful and rough kiss ignited a fire in my Kokoro...