He fell into a suffocating, violent kiss...

I used to like my husband's younger brother, Kyosuke. My husband and Kyosuke, who had been bad friends since childhood, worked together at my father-in-law's company. When I joined the company there, while I was following my husband's work, Kyosuke taught me how to set up the work schedule. However, the two finally broke up and Kyosuke left. Ten years have passed since then, I have revived my past feelings in unexpected ways. Kyosuke's forced and rough kiss set fire to my heart...