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To Serve and To Betray (Erwin Smith X OC Fanfiction) by pecel123
Fandoms: Shingeki no Kyojin | Attack on Titan
22 Nov 2025
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Summary
Six years before the Fall of Wall Maria, Maude Lendrich—a Marleyan Warrior and Titan shifter—was sent to infiltrate Paradis with a mission: locate the Coordinate and pave the way for Marley’s conquest. Rising through the ranks of the Military Police, her brilliance in combat and strategy caught the attention of Section Commander Erwin Smith of the Survey Corps—a man whose sharp mind challenges her resolve and whose unspoken bond with her threatens to unravel the walls she built for herself.
But as Maude immerses herself in life within the walls, her belief in Marley’s cause begins to falter. The people she once saw as enemies show her compassion, courage, and humanity—qualities she struggles to reconcile with her mission. Torn between the life she’s sworn to and the bonds she’s forged, Maude must confront a terrifying truth: if she reveals who she truly is and what she’s done, will she find redemption—or be condemned by the very people she’s come to care for?