I went on a hot spring trip with relatives and found that my cousin's huge breasts were right in front of me. While we were washing each other, she grabbed my dick and got me excited. When it was just the two of us, my tsundere cousin took me to a bathhouse where no one would come, continued our washing, rubbed our bodies together, and made me hold back my dick multiple times until I couldn't take it anymore and fucked her standing in the hot spring.
