I used to like Kyosuke-san, my husband's younger brother. My husband and Kyosuke-san, who had always been on bad terms since childhood, worked together at my father-in-law's company. When I joined the company, while supporting my husband's work, Kyosuke-san taught me the ropes of the job step by step. However, eventually, they parted ways, and Kyosuke-san left. Ten years have passed since then, and I unexpectedly revived my past feelings. Kyosuke-san's forceful and rough kiss ignited a fire in my heart...