During my hospital stay with both hands immobilized, I was forced into a strict no-masturbation rule. My sexual frustration eventually reached its limit, so I begged my beautiful, big-breasted stepsister to relieve my pent-up desire by any means necessary. Surprised by my request, she unexpectedly agreed. In the quiet atmosphere of the hospital room, she gently and carefully stroked my cock, mindful of my injured body. Then, she straddled me and began a slow, sensual cowgirl rhythm, grinding her hips in a sticky, teasing motion. Though I initially tried to resist, I couldn't hold back once my stepsister got serious—her passionate yet tender riding overwhelmed me, and I ended up climaxing with a creampie deep inside her.