On a hot spring trip with relatives, my cousin's big tits—now fully grown—were right in front of me. While washing each other, she grabbed my cock, unable to hide her excitement. When we were finally alone, I continued with my tsundere cousin in the empty bathhouse. Rubbing our bodies together, I endured repeated orgasm denial as she teased my uncontrollable dick—until I couldn't take it anymore and fucked her hard, standing up in the hot spring.