Golden Sky Stories: Twilight Tales (originally released in Japan as Mononoke Koyake) is the first Japanese supplement for Golden Sky Stories, and it adds the mononoke as a new set of character types for players and narrators alike. Each has a signature character, but they’re also easy to reskin to be any number of creatures. The rules for the kappa also let you play other aquatic creatures like mermaids, and where the signature visitor is an alien, your visitor could be a time traveler, a winter fairy, or even Santa Claus. (...) In addition to the “Otoshidama’s Adventure” and “A Ghost’s Errands” scenarios, it will include two original scenarios by T.S. Luikart: “Present Thunder” and “Big Dog’s Day.”
(from the Kickstarter page)
After the sun has set,
Other things that live in the town come out.
They are neither human nor animal.
They are called "mononoke."
Spirits, monsters, ghosts, aliens.
They are strange, mysterious beings.
They can be found anywhere where there are people.
They can be found near you too.
You've met them without realizing it.
If you're careful, and you call out to them,
They'll answer you, any time.
(from the back of the book)