Japanese have a fervor for learning English and many bookstores have a corner dedicated to dozens of journals in the language, many of them now featuring the new U.S. leader's face.

"Speeches by presidents and presidential candidates are excellent as listening tools to learn English, because their contents are good and their words are easy to catch," said Yuzo Yamamoto of Asahi Press, which produced the best-selling text book.

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"Obama's is especially so. His speeches are so moving, and he also uses words such as 'yes, we can,' 'change' and 'hope' that even Japanese people can memorise," he said.

Speeches by George W Bush and former nominee John Kerry's four years ago did not have the same appeal, however, and nor do those made by Japanese politicians, Yamamoto said.

"In Japan, we don't have politicians who have such a positive influence. That's why we have to turn to a foreign president for someone in whom to place our hopes."

The 95-page paperback features Obama's speeches in English from the 2004 Democratic National Convention and during the Democratic Party primaries, in which he defeated Hillary Clinton. They are accompanied by Japanese translations.