
OVA · 15 episodes · 34 min/ep · Studio Pierrot
Tokiko Mima, nicknamed "Key," is a 17-year-old girl living in the Japanese countryside who, despite her human-like appearance, is a robot. When Key's grandfather Dr. Murao Mima passes away, he leaves her a dying message, telling her that she can become a real girl if she is able to make thirty thousand friends. Thus, Key moves from the quiet Mamio Valley to the busy streets of Tokyo, where she soon runs into her childhood friend Sakura Kuriyagawa. Key quickly becomes enamored with idol singer Miho Utsuse and wonders if becoming a singer will allow her to make the amount of friends needed for her to become human. But Miho carries a ominous secret: she is connected to Jinsaku Ajou, an old rival of Dr. Mima trying to make new a breakthrough in robotic weaponry. As Key works to become a real girl, Ajou sets a dangerous plan into action, and it turns out there's much more to Key than meets the eye. [Written by MAL Rewrite]
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Tokiko Mima
Main

Junko Iwao
Japanese

Sakura Kuriyagawa
Main

Miki Nagasawa
Japanese

Shuuichi Tataki
Supporting

Toshiyuki Morikawa
Japanese

Murao Mima
Main

Kouichi Kitamura
Japanese

Jinsaku Ajou
Supporting

Shou Hayami
Japanese

Senichi Tamari
Supporting

Kenichi Ono
Japanese

Sergei
Supporting

Juurouta Kosugi
Japanese

Hikaru Tsurugi
Supporting

Shinichirou Miki
Japanese

Aoi Komoda
Supporting

Akio Ootsuka
Japanese

Miho Utsuse
Supporting

Chiyako Shibahara
Japanese

Junko Iwao
Theme Song Performance (ED3)

Saffron Henderson
Insert Song Performance (English)

Nicole Oliver
Theme Song Performance (English; ED3)

Kunihiko Tanaka
Original Character Design

Hirofumi Suzuki
Key Animation (eps 9, 12, 15)

Shigeru Ueda
Storyboard (eps 14, 15)

Shigeru Ueda
Episode Director (eps 14, 15)

Takashi Watanabe
Episode Director (ep 11)

Takashi Watanabe
Storyboard (ep 11)

Kanta Kamei
Key Animation (ep 14)