A girl who forcibly invited Jing and Kir to solve the mystery of a treasure that would make them immortal. Vermouth has a bright personality, and she always carries an umbrella with her, probably because she hates the rain. Vermouth is actually a robot that moves with a perpetual motion machine created by King Cointreau. She was looking for a legendary minstrel in search of a legitimate successor to the King and his Eternal Water. She chooses Jing as King Cointreau successor because of his casual gestures. At the end of their journey, even beign a robot, she cried when Cointreau died after his meet with Jing.