Hana and Tetsuya, who have lived in the neighborhood for a long time and were childhood friends, became brothers when their parents got married. Hana, who suddenly became a family and made a wall in Tetsuya and felt lonely, remembered the old days and set up a doctor's play, but I was surprised that Tetsuya's cock I saw at that time was unexpectedly large. .. I was worried and suggested to play doctor again and let Tetsuya touch her huge breasts ... From that day on, my younger brother's blue sexual desire, which I couldn't control, was used as a brush.