Ai Mashiba, a married woman, has relied on her husband's devoted caregiving to sustain her daily life. Due to her physical limitations, however, her appetite and libido have grown stronger than ever before. Filled with desire, she begins seeking intimacy with her husband, but faced with her passionate advances, he gradually develops erectile dysfunction. The very support and love that defined their everyday life suddenly trigger a physical crisis in him. The shifting dynamics between wife and husband—the evolution of her desires and his emotional turmoil—deepen the complexity of their story.