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Significant plot details follow.
Raphael (ラルフ, Rarufu) is the main protagonist in Rhythm Thief and the Emperor's Treasure. He is an eighteen year old student in Paris who leads a double life as a infamous thief at night with his faithful dog Fondue.
Raphael is nicknamed Phantom R, stealing valuable artwork only to return it days later. His father disappeared a few years ago. He meets a young girl named Marie after stealing a bracelet bearing the same symbol as a coin his father left him, and finds that her violin has the symbol on it too after helping to defend her from Napoleon's henchmen.
Raphael and his father were very close up until Isaac abandoned him. Isaac would take Raphael to Tulleries Garden to play sometimes when they were young.