StarForce

Astrok home to the Astrokians, have guarded a blue star since their planets ancient times. The star gives them intelligence and power, creating a society that far surpasses ours. Not only that but the star also grants six powers, all based on good, to six good people, but people can change. Driven by her power an her love one of the most recent six somehow managed to take over Astrok, becoming the dictator, and with the loyalty of her people started to take over massive solar systems expanding her empire.
When the fighting arrive on Earth it was almost quickly dominated. Only the major countries like the US, China, Germany, France, Britain, and Russia had few cities not taken over, but by this time five girls who barely know each other are in space with only each other and a gem.