My father remarried. His new wife is a beautiful young woman named Marina. One day, I accidentally saw the two of them playing around naked. For some reason, my heart started racing and my body felt restless. After that, I found more chances to talk with Marina, and my feelings for her grew stronger each day. Eventually, I couldn't hold back anymore and reached my hand toward Marina's breasts. Seeing this, Marina gently began teaching me about sex. Just like lovers, our relationship deepened more and more.