Married for 23 years, my life with my wife seemed ordinary on the surface. I considered myself honest and faithful—never once had I sensed another man in her life, nor had I felt attraction toward any other woman. But one day, a gathering of friends I'd met through our shared interest in history led to an "off-meeting of the Suginami History Circle" being held at my home. That day, I encountered a scene I never could have imagined. In that instant, my heart was shaken by unbelievable anger and an excitement beyond reason. It felt as if my entire life had been flipped upside down, my beliefs crumbling. What happened that day would become a turning point, changing my life forever.