When I was in fifth grade, I was playing at the park's adventure course with a friend, straddling a log while chatting about my favorite idols and clothes. When our conversation started to fade, my friend jokingly began slowly moving along the log, and as I followed mimicking them, I unconsciously let out an "Ah." My friend asked, "What's wrong?" but I couldn't explain it properly, so I lied and said, "A branch just hit my leg." At that moment, I felt a sudden throb and tingle between my legs, sparking a desire to try it again. That night, I rushed back to the park, straddled the log, and rocked my hips back and forth—finding the sensation incredibly pleasurable. Since then, I must have visited that park over 300 times. Even in the dead of winter, I kept rubbing myself despite shivering, so maybe that's why I am the way I am now. I dislike masturbating with my fingers, but I love straddling the edge of the bed, positioning myself so my clitoris hits just right, imagining sex with my boyfriend as I grind back and forth. I always keep my underwear on because it hurts if I take them off. When I'm about to climax, I pause for a moment, wait until I calm down, then start again—I enjoy repeating this cycle. At the peak, my vision goes completely white, and I tightly grip the sheets, savoring the intense sensation. I love lingering in the afterglow, even though my underwear always ends up soaked. I just can't stop. Also, when I jerk my boyfriend's cock during my period and watch it pulse as he cums, my pussy gets instantly wet. Just holding his cock turns me on so much. Sometimes, after he cums, I get unexpectedly aroused and end up masturbating alone.