I have lived in the school's dormitory for three years, and after the graduation ceremony that takes place next week, my student life will officially come to an end. As graduation day approaches, my dad called to inform me that both he and my mom would not be able to attend my graduation ceremony. Although he said it was okay, I still felt a bit lonely. After the ceremony, I was very surprised to see my mom on the way back. Actually, Yuna's mom is my stepmother. When my parents divorced, Yuna's mom was hired as a maid in our house. Not long after, my dad and Yuna's mom fell in love and got married. Even though I knew it was wrong, I had secretly loved my mom since then. When I had to live alone in the dormitory, my mom often sent me food and called to chat with me, helping to ease my feelings of loneliness. Today when I reunited with my mom, she was still incredibly beautiful and warm as ever. She invited me to go out to celebrate my graduation. Because she was so happy, she drank a bit too much, so I had to help her back to the hotel. When I was about to return to the dormitory, she held me back. It turned out that my mother knew my feelings, and she had always waited until today, the day I graduated. She took the initiative to put my hand on her beautiful big tits, actively inviting me. I knew I couldn't do this kind of thing, but I couldn't hold back my feelings for my mother anymore. Since then, whenever there is no father nearby, the two of us are more like a couple of lovers than stepmother-in-law...