Attack on Titan: Bound by Blood and Duty( pieck x Oc story)

In year 839 a Marleyan warship sets its sights on an unsuspecting Atalaan vessel, the Marley soldiers board the ship, leading to a brutal confrontation. In the chaos, they discover that the ship is transporting King Richard of Atalaan, his wife Catherine, and their young son, Arthur Windsor. The Marlayans, valuing the royal family's capture more than their lives, execute the ship's crew while imprisoning the rulers Upon reaching Marley's shores, Richard and Catherine are interrogated for information about Atalaan's defenses, Arthur's mother Catherine is transformed into a pure Titan and got sent to Paradis Island. Richard is imprisoned in the depths of a Marleyan dungeon where once Arthur gets 10 years old he would get fed to his son. Arthur is left alone and vulnerable, orphan but the Marley Commander, Theo Magath, sees potential in the boy-a living connection to the royal bloodline of Atalaan and the king Titan, Determined to mold Arthur into a warrior, Theo adopts him, introducing him to the ruthless training and ideologies of the Marleyan military. As they cultivate a father-son relationship, Arthur struggles with his duality: being raised as a Marleyan soldier but haunted by the legacy of his Atalaan heritage. He trains relentlessly, driven by a desire for revenge against the Marlayans for the loss of his parents yet at the same time, he seeks healing and resolution for his troubled past