El Sr. Takazawa, un anciano inválido que es atendido en su casa por Haruko, una joven estudiante de enfermería, es elegido por el Ministerio de Bienestar Público japonés para probar el Z-001, una cama de hospital computarizada con características robóticas que supuestamente muestra más eficiencia y habilidades que cualquier enfermera humana, pero Haruko desconfía de una máquina incapaz de considerar los sentimientos humanos.
Some time ago, Shunsaku Ban witnessed his friend’s murder during a random robbery attempt, and decided to become a guardian for the man’s infant son, Yuno. The child instantly bonded with a mysterious green cat that was carried by the gang, but Shunsaku was convinced that there’s something nefarious about the feline. Now, in the present, his long lost child surfaces in the news as a rich and powerful man who’s having the best luck at the casinos - and somehow, the green cat is still alive and at his side. Determined to save Yuno from the clutches of this evil creature, Shunsaku begins to investigate the truth of what’s really going on...
The story surrounds a boy and a cow who have always lived their lives together. One winter, a famine strikes their village. The villagers resolve to the cow, but the boy secretly helped the cow escape. A few years ago, the boy (now grown-up) and the cow meet again...
