Ai and Yu first meet the 22-year-old Lisa Pacifist (Risa Patsifīsuto) in the Subway, where she decides to help the twins search for their parents in Wonderland. She is able to manipulate spirits found in nature through the use of her Kigen Arts and uses this power to protect the two twins from the various monsters of Wonderland. Ai believes that Lisa came to Wonderland in search of her boyfriend, but her true reason for coming is still a mystery. It is greatly hinted that she has feelings for Kaze.    Source: Wikipedia

Ai and Yu, after reading their parent's research and after their parents' disappearance, they decided to go on search for them. They ride a strange train to the Inner World in search of their parents and meets up with Lisa in the train and together they begin their journey within the Inner World.
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(Source: Anime News Network)

Skills & Abilities: Kansai dialect, piano  
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