[HUNTC-150] "You won't get pregnant in the water, right?" My super kind sister-in-law let me cum inside her in the bathtub! My newest family member wanted to get to know me quickly, so she came into the bath with me! (Censored)

My new sister wanted to get to know me quickly, so she came to take a bath with me! Naturally, my dick started to expand in that situation... If I thought it was bad, she would find out and it would become awkward... But my sister-in-law was secretly in heat and said, "I want to get to know you sooner," and we became super close! When I was about to cum, she said, "You won't get pregnant if we're underwater," and guided me to insert it. And then I came inside her! My sperm overflowed from my pussy on the surface of the water! Is it really okay?