The ending for the young man peeking at the neighbor's wife masturbating

The existence disturbs me, the one who lives alone, is Mako, who lives in the opposite room. My husband and I are usually busy every night, and I can see it from my room. I cannot control my curiosity and my hidden motives, and I am still me. One day, when I lost my desire and looked out the opposite window, I caught Mako's gaze, who noticed me spying, beginning the days her husband brought me home to relieve his desires while on business trips.