Carmina was super stressed about her homework so as a good brother I decided to help her out.

Carmina was drowning in homework, her stress levels through the roof. As a good brother, I stepped in to lend a hand. I found her bent over her desk, her skinny ass in the air. 'Need a break?' I asked, my big dick already hard. She looked back at me, her eyes filled with tension. 'Yeah, I could use one,' she replied. I walked over, my hands already on her hips. 'Let's take care of that stress,' I said, pushing her down gently. She got the hint, arching her back as I slid into her pussy from behind. Doggystyle, just how she liked it. Her moans filled the room as I pounded into her, each thrust releasing her tension. 'Fuck, that feels good,' she gasped. I grabbed her hair, pulling her head back as I rode her harder. Her pussy clenched around me, and I knew she was close. With a final thrust, she came undone, her body shaking with release. I followed soon after, filling her up. We collapsed onto the bed, her body still trembling. 'Thanks, bro,' she said with a satisfied smile. 'Anytime, sis,' I replied, already planning our next study session.