"I became your mother so that you could do this..." Yoko, a single mother, has always tried her best to stand up to the world. Her two sons have grown up and become strong. The second son relentlessly pursues his mother to satisfy his sexual desires. Even though she resists, her mature body seeks her son against her will. The eldest son, who witnessed his mother and second son having sex, decides to convey his feelings for his mother with his body...
