Possible Clues:

• Japan's 'way of the gods' religion
• Indigenous Japanese religion
• 'Way of the gods' belief
• Resolved on this religion
• It's a religion this, no messing about!
• Second husband knowledgeable about Japanese religion
• Faith that venerates kami
• Thus penning clue for religion
• Tomes from monotheists produced in good faith according to the Japanese
• Religion contributing to clash in Tokyo