Mobile Suit Gundam: The Witch from Mercury - Prologue
A space-focused sci-fi series that delivers the kind of world-building and atmosphere fans of the genre look for.
On the planet Mercury, the advanced technology of cybernetic prostheses has led to the development of giant pilotable robots. However, prolonged use of these achievements in bioengineering takes a significant toll on a pilot's body. As the Merucians' mobile suits gain formidable power, fear rises among the people of Earth. On her daughter Ericht's fourth birthday, pilot Elnora Samaya tests the state-of-the-art Gundam Lfrith under the watchful eye of its creator, Cardo Nabo. Ericht visits Elnora at work despite orders not to, and chaos unfolds after she forms a strange bond with her mother's mecha.
Plot summary from MyAnimeList. Data and images via Jikan API.