Gearbreakers Books in Order

At the center of the Gearbreakers series are two girls who should be enemies. Eris Shindanai is a rebel saboteur from the Badlands, famous for climbing inside Godolia's giant war machines and wrecking them from within. Sona Steelcrest is an elite Windup pilot, cybernetically altered and trained by the empire that rules those same Badlands through fear. When the two meet, the obvious question is not whether they trust each other. It is how long they can stand being in the same room.

The setup is pure high-stakes YA sci-fi, but the series works because it never forgets the people inside the machinery. Godolia does not just conquer with weapons. It turns the Windups into symbols of power, almost gods, and uses that spectacle to keep ordinary people obedient. That gives the books a sharp edge. Every fight is about survival, but it is also about what happens when a government remakes bodies, loyalty, and even belief to keep control.

In this world, the gods are machines.

Most of Gearbreakers runs on the friction between Eris and Sona. Eris is loud, reckless, and angry in a way that feels earned. Sona is polished, disciplined, and carrying her own hidden mission inside enemy lines. Their alliance starts as necessity, not trust, and the fun of the first book is watching that change by inches. Around them is a ragged group of rebels, fellow pilots, and survivors who give the series its found-family heartbeat.

The setting matters a lot. The Badlands feel scorched, militarized, and exhausted by war, while Godolia's cities and academies run on propaganda, surveillance, and spectacle. Mikuta writes the contrast well: dusty resistance hideouts against gleaming imperial power, human bodies against metal giants, private tenderness against public violence. The tone is fast, intense, and emotional, with big action scenes, sharp banter, and a romance that stays tangled up with politics and pain.

Then Godslayers raises the cost. By the second book, the rebellion has splintered, the empire is hitting back hard, and Eris and Sona are forced onto opposite sides of the conflict again. Their bond is still the core of the story, but now it has to survive imprisonment, manipulation, and the brutal question of what is left of a person after a system has tried to turn her into a weapon. The stakes widen too, as Godolia pushes ahead with plans that put even more children in danger.

It moves fast, but the series still leaves room for grief, fury, flirting, and hard choices. If you like your sci-fi loud, angry, romantic, and built around girls who refuse to stay useful to an empire, this duology is easy to sink into. Expect giant mechas, sabotage missions, queer yearning, and a story that keeps asking whether love can survive war without becoming another kind of damage.