SOFT POWER HARD TRUTHS / Japan's pop industries: blind at home, beloved overseas Roland Kelts / Special to The Daily Yomiuri By now it's no secret to anyone with a high-speed Internet connection: The gap between the popularity of contemporary Japanese culture overseas and its anemic industries at home has become a chasm. Anime conventions in the United States continue to proliferate, not only in cosmopolitan coastal cities like New York, Boston and Los Angeles, but also in more rural areas in Ohio and Tennessee. Annual attendance at these conventions is record-breaking. Sakura-Con in Seattle in late April, the convention I most recently attended as a guest, tallied 19,040 individual attendees this year. Elmira Utz of the Asia-Northwest Cultural Education Association, a host of Sakura-Con, notes that their celebration of Japanese pop culture fed roughly 50 million dollars into Seattle's economy from 2006 to 2010. Not sneeze-worthy numbers in post-Lehman shock economies. Yet ...