Set in the year between the events of the first two games, the story revolves around two new characters exclusive to the manga: Tyr and Mizuha, and the mystery of severed Gear parts falling from the sky.  Members of the Post War Administration Bureau (P.W.A.B. for short) - the secretive organization responsible for many events in the games - serve as the antagonists of the story.  Characters from the games, such as Sol, Ky, Axl, Potemkin and Kliff, also appear, albeit with relatively minor roles.

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.<br><br>
(Source: Crunchyroll)

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