Born in Mantle, Red Crimson comes from a modest family in a city marked by social discrimination against Atlas. Son of hardworking parents, Red grew up amidst inequality, nurturing a desire for justice against the oppressive system. Upon receiving a scholarship to Atlas Academy, Red enters a world of privileges and prejudices, facing challenges that test his determination. During a confrontation at the academy, Red is humiliated by an arrogant student, but this only fuels his desire for revenge. Assuming the identity of Arsene Lupin, he plans and executes a daring heist at the house of an Atlas magnate, exposing not only that man's corruption but also distributing his ill-gotten fortune among the residents of Mantle. His heroic act gains both fame and infamy, being called the "Phantom Thief" by some and a symbol of justice by others. When selected for transfer to Beacon Academy, Red sees the opportunity to hone his skills and return even stronger to confront Atlas's corrupt system. Receiving a pistol from his parents as a gift, Red sets off for Vale determined to become the best hunter possible, inspired by the echo of hope his family placed in him. With the promise of a triumphant return, Red Crimson prepares to continue his journey as the intrepid Arsene Lupin, the Phantom Thief of Remnant.