"Mihua" (Japanese: ベィカー; Japanese Roman word: Beika) comes from Baker Street, London, England. In The Adventures of Sherlock Holmes, Baker Street is the residence of Sherlock Holmes. In Japanese, "Mihua" and "Baker" have the same pronunciation, both of which are Becca.

"Cup holder" (Japanese: ハィド; Romaji in Japanese comes from Hyde Park in London, England. In The Adventures of Sherlock Holmes, Holmes often goes for a walk in Hyde Park with Watson. In Japanese, "Cupholder" and "Hyde" have the same pronunciation, both of which are "Haido".

In addition, correct, "Didan" (Japanese: てぃたん; Japanese romaji: Teitan) is not the word "detective in English", but a Japanese detective (たんてぃ; Japanese romaji: Tantei) is pronounced backwards.

The prisoner's code word in TV 304 is the reverse of detective English, which means "Emperor Dan", but "Emperor Dan" comes from the English word "Detective".

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