I ended up staying at my brother's house to prepare for exams, but I couldn't focus on studying because I was distracted by my sexy sister-in-law. I rummaged through her laundry and took her underwear, then quietly masturbated, but she caught me in the act. My sister-in-law said she would pretend not to have seen anything, but in my excitement, I begged her, 'Sister-in-law, please do something about it,' and exposed myself. Hesitant, my sister-in-law eventually gave in to my insistence and slowly began to touch my crotch…
