Sin Kiske, the forbidden child of a human and a magically crafted biological weapon called a Gear, lives in a world where magic has replaced science, and scars from the Gear rebellion remain. Attending his parents’ taboo-breaking wedding, he encounters a mysterious girl with deep hatred for Gears, and their fateful meeting threatens to upend the world once again.
Episode 1
Sin witnesses his parents’ sacrifice and vows to confront Unika to learn her true motive.
Episode 2
Unika disrupts the peace ceremony, triggering a fierce clash as Sin tries to reach her true intentions.
Episode 3
Sin confronts Unika to prevent a new war, while Elphelt goes missing during a critical investigation.
Episode 4
Sin confronts his failures, Unika questions herself, and the true enemy's identity begins to surface.
Episode 5
Sin and Unika lose control as Future Nerville’s plan triggers a global Gear rampage.
Episode 6
With the world at stake, the warriors clash against a relentless power that threatens everything.
Episode 7
Sin leads a final charge to stop Nerville as allies unite and the fate of the world hangs in the balance.
Episode 8
Unika and Sin face a pivotal battle that will shape their futures.
