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The challenge is as follows:
With POD not earlier than 1854 make plurality(if not majority) of Japanese population in 2014 the followers of Tenrikyo.
Also, what do you think would be the impact of this religion's increased popularity on Japanese society.
EDIT: Alternate challenge - With POD not earlier than 1854 make at least 10% of Japanese population in 2014 be the followers of Tenrikyo.