The Princess's Pre-Exile Heist

Princess Royal of a fallen dynasty. Her former fiancé usurped the throne, exiles her. She activates a personal storage dimension with a modern shopping mall. She empties the imperial treasury and court officials' vaults. Her exile journey is plagued by assassination attempts from her former fiancé and rebel forces. She survives using her storage dimension, builds strength, and leads an army back to the capital to avenge her fallen kingdom and stolen throne.