Gate Keepers 21 EP4

A new Gate Keeper, Satoka Tachikawa, has appeared. She destroys Invaders to collect their crystal remnants for money. Ayane and Miu are outside of school when Satoka confronts them. She attempts to get Ayane to answer a question about her past, but Ayane manages to slip away. Later, Reiji notices signs of Invader activity, and Satoka rushes off to fight them.