Key the Metal Idol is a oVA anime that premiered in winter 1994, produced by Studio Pierrot.

About the production: the story comes from an original script, there are 15 episodes of about 25 minutes and its current status is "finished".

Its main genres are action, drama, mecha, music and sci-fi, with themes such as Robots, Idol, Female Protagonist and Artificial Intelligence.

On AniList, Key the Metal Idol has an average score of 68%, a good score, and appears on 12,697 users' lists.

Her classmates at school called her Key, as in the "key" to a strange mystery. Key's "grandfather" was a kindly old scientist wanting to use his skill in robotics to create peace and love in the world. But when that kindly old scientist passed away, poor Key was left behind, lacking even the ability to smile. There still is hope, however a message left behind for Key suggests a fantastic possibility. Could it really be possible for Key to become a real, live human, if she can only win the love of 30,000 people? A dark, haunting tale of cybernetic sci-fi dreams, spiritual visions, and the turbulent world of Japanese pop music. (Source: Discotek Media) Note: The two last episodes have a duration of ~98 minutes

Official synopsis from AniList.