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Book, 2015
Current format, Book, 2015, First Yen Press edition, Available .
Book, 2015
Current format, Book, 2015, First Yen Press edition, Available . Offered in 0 more formats
After his brother vanishes in order to save him, Hiro, with the help of new friends and his health-care robot, tries to get to the bottom of what happened to his sibling.
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