For the sake of her son suffering from an incurable illness, mother Keiko Kajimoto (Yoshino Midori) desperately pushes herself to the limit, sacrificing her own well-being. As the heartbreaking reality of her son's impending death draws near, their bond grows ever deeper. Sensing her son's desperate longing on an instinctive level, the line between mother and child is ultimately crossed. This poignant and tender story of warmth and sorrow leaves a lasting impression.