This role-play is performed by adults. It was in the summer five years ago that I crossed the line of infidelity with Yuzuru-kun. At the time, we were living in the same housing complex, and as Yuzuru's mom asked us to go make dinner several times, we became familiar. Then, that summer, when my husband's affair was discovered, Yuzuru-kun, whether he knew my feelings or not, expressed his interest in me. As if clinging to that thought, I sought his body. But that day wasn't enough, and five years had passed since their naughty relationship...