Zatch Bell!

The Mystery of the Missing Red Book (1x6)

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Kiyo is hospitalized because of his wounds following the previous battle. A patient next to Kiyo in the hospital room is revealed to be a kid named Yuuta. Yuuta has been hospitalized longer than usual for a broken leg. When Kiyo tells Yuuta he will not heal if he does not eat, Yuuta steals Kiyo's book and threatens to burn it. Kiyo, Zatch, and Suzy search for Yuuta. When Zatch finds Yuuta, Yuuta pretends he lost the book and Zatch offers to look for it with him as they are friends now. Yuuta touched by Zatch's words leads Zatch to the book on the roof. Yuuta falls on his way down the roof but is saved by a "Zaker" which destroys the floor under Yuuta and causes him to full into a room full of pillows.