Working at a construction company but stuck in a dead-end life, I've been carrying on a mistress relationship with Yumi, a married woman I met through social media. She accepted everything I desired, always calling me over whenever I was stressed, letting me indulge in filthy acts. To me, she was the perfect convenient mistress. But she was more than just a mistress—she responded to my demands with the calm confidence of a mature woman. That very composure was her allure as an adult, the seductive power that kept drawing me deeper and deeper under her spell.