Fujin, Raijin, and the Turtles (Lost Books) in Village in the Shade: An old-looking book found late at night. What could be written inside of it? Can be read once returned to its library shelf.
When available
After you have met Fujin and Raijin
Where to find
The open ground left of the Kiki Manor entrance (Nights when Fujin and Raijin appear)