I should outline the main characters. Kotori and Suzuka are two of the main heroines I remember. Kotori is the mecha pilot with a strong sense of justice, maybe a bit fiery. Suzuka could be the mysterious, tech-savvy one, perhaps from a different background. Are there more? Maybe a warrior or a healer type? Each has their own story that intersects with the main plot of saving the world or fighting against an evil force.