Zatch Bell!· Season 1 · Episode 113
A Letter From a Friend. Burn the Book!! Rein's True Identity.
Zatch receives a letter addressed to him from one of his friends from the Mamodo world, Rein, who asks Zatch to burn his book. Kiyo and Zatch decide to take a plane to Southern Asia to meet Rein and his book owner and discover the reason for this serious request.
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