Mr. Takazawa, an elderly invalid who is cared for at his home by Haruko, a young nursing student, is chosen by the Japanese Ministry of Public Welfare to test the Z-001, a computerized hospital bed with robotic features that allegedly displays more efficiency and skills than any human nurse, but Haruko mistrusts a machine unable to consider human feelings.

Chisa Yokoyama
as Haruko Mitsuhashi (voice)

Hikojiro Matsumura
as Kijuro Takazawa (voice)

Chie Sato
as Nobuko Ohe (voice)

Hikojiro Matsumura
as Ache B (voice)

Koji Tsujitani
as Mitsuru Maeda (voice)

Masa Saitō
as Haru Takazawa / Z-001 (voice)

Rica Matsumoto
as Satō Tomoe (voice)

Ryuji Saikachi
as Ache A (voice)

Shinji Ogawa
as Suguru Terada (voice)

Shinsuke Chikaishi
as Yoshihiko Hasegawa (voice)