Chou Kousoku Gran Doll

Hikaru’s life revolves around her friend Haruna, the boy she likes and her eccentric scientist father. A past she knows nothing about suddenly intrudes when she learns that she is heir to the throne of Grannars and the rightful bearer of a powerful royal suit of armour.

The armour transforms her into the warrior GranDoll, placing her against attackers from space who want it for themselves. Ordinary outings with friends become dangerous as her enemies turn to the people she cares about to force her surrender.