After failing his entrance exams, the son became a shut-in. His mother, Reiko Kitagawa, pained by his condition, struggled daily with the unbearable situation. The father remained indifferent—only talking, never acting—leaving Reiko to silently endure the suffocating family atmosphere. One day, when she came to wake her son, she discovered him masturbating in his hiding place. In that instant, his demeanor changed completely. Overcome with intense arousal, he made an unthinkable request to his mother, Reiko. What follows is a story that challenges the boundaries between mother and son.