[HUNTC-073] - While saying, "I've rubberized properly and it's okay to have sex," I will report that the rubber was torn and I my sister raw! My sister got it in a health and physical education class

My sister gave me a piece of rubber in a health and physical education class and said, "Let me practice with my brother," so I couldn't refuse and just took off my skin. When I thought that the installation was completed safely, my sister's appearance suddenly changed! ?? - "I've taken birth control properly and it's okay to have sex," I straddled her! However, it was torn on the way and was in a raw state! Moreover, my sister felt even more and put it out as it was. My sister and I were even more raw ... This is force majeure, isn't it? My sister wanted to me!