When I was a student, my brother took Aika home to introduce me to my family. Aika is an extremely cute and beautiful girl, especially her big breasts make me unable to take my eyes off! I feel jealous of my brother for having such a good girlfriend. Hearing the sound of the two of them fucking each other in the next room made it very difficult for me to control my temper. Some time later, Aika is now my sister-in-law, and I have also graduated from school and gone to work. This time there was a business trip in Tokyo, and the second brother immediately invited me to stay at his house for a few days, so I didn't have to rent a hotel. So after many years, I was able to see Aika again. She is still as cute and beautiful as ever. One thing... She wasn't wearing a bra! I could see the two peas sticking out and the shape of her round tits! Especially when I found out, my brother constantly worked overtime, not having sex with her, which made me can't stand it anymore! It is impossible to waste such an attractive body! At first, she resisted, but after realizing her feelings and enjoying the pleasure that my cock brings, she began to actively join me. And so, during my stay here, I took care of my beautiful sister-in-law on behalf of my brother...