A son suddenly became apathetic a year ago. Then his body stopped moving, and now he is bedridden. His mother takes care of such a son. However, she was worried about an unknown illness. One day, her son reaches for his mother. He said his crotch was itchy. When his mother touched him, hoping to make him feel better, his crotch began to erect, and his mother helped him ejaculate as he asked. A few days later, her son called her mother again. Surprisingly, his hand was moving. Her son squeezed her mother's breasts with his hand, which had started to move, and said it was for rehabilitation and wanted to combine with his mother. Although the mother was troubled, she thought of her son and pressed her own secret parts onto his hardened crotch...