After losing his wife, my father-in-law lost his appetite and withdrew into grief. When he told me, "Please do whatever you can for me," I never expected things to take such a shocking turn. Suddenly, he pleaded, "I want to be inside you... deep inside, Yukifumi... please! Just 10 seconds!" Overcome with surprise and confusion, I hesitated—but as his cock pressed forcefully against my groin, he pushed inside without waiting. In an instant, he reached climax. This unexpected release within just 10 seconds felt like the deep sorrow and loneliness buried in his heart had finally broken free, if only for a moment.