Felt stands 153 cm tall with golden hair, crimson eyes, and a prominent yaeba canine tooth. Her attire features a black tube top, a brown jacket with white trimmings, a red scarf, tattered black tights, brown gloves, a large black bow in her hair, and a red ribbon tied around her left ankle. Raised as an orphan by Old Man Rom in the capital's slums, Felt turned to thievery for survival, deeming it preferable to selling her body. This harsh upbringing forged fierce independence and deep distrust of authority figures, convinced the powerful ignored the poor. Her driving dream was earning enough to escape the slums with Rom. Felt exhibits an abrasive, uncouth personality, refusing deference to nobles or officials. She openly criticizes Lugunica's government and scorns those relying on fate over action. Her experiences fuel a desire to dismantle the class-based system for the poor's benefit. Her life shifted when stealing a jewel from a silver-haired woman led Reinhard van Astrea to discover her. Identified as the lost niece of Lugunica's late king due to royal traits, she became the fifth Royal Selection candidate. Though initially resistant, she accepted the role to reshape kingdom policies benefiting the underprivileged. In a parallel world setting, Felt interacts with characters from multiple dimensions as a student. Her relationship with Subaru Natsuki remains strained from past conflicts, though they cooperate situationally. Reinhard continues as her knight, though she rebuffs gestures like offered chocolate. During school competitions, she demonstrates strategic thinking by proposing temporary alliances against stronger opponents. Felt maintains characteristic directness and refuses to back down from challenges. She prioritizes practical solutions during conflicts, like assigning different teams to handle separate threats simultaneously. Her interactions retain the stubborn pride forged in the slums.