Though this data is from 2003, it still pretty accurate for Japan today with regard to religion.
Q3: Which of the following do you think exist?
36.3% Ancestors’ Spirits
35.6% God (or gods in general)
27.0% Nothing Supernatural Exists
15.9% Other Worlds (Pure Land?)
13.0% Charms and Guards do not Exist
10.4% Don’t know
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