死者の叫び声 デスホイッスル／Cries of the Dead: The Death Whistle
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Water Vapor Explosion / Mr. Denjiro's Happy Energy! #795
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Ancient Weapon: The Boomerang / Mr. Denjiro's Happy Energy! #813
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How to Throw Playing Cards! / Mr. Denjiro's Happy Energy! #818
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Screws and Matchlocks / Mr. Denjiro's Happy Energy! #782
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フライングディスクの科学／The Science behind Flying Discs
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Japanese Martial Arts: Kusarigama / Mr. Denjiro’s Happy Energy! #826
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The Assassin's Teapot Is Weird
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