What is "tenka"

Tenka may refer to:

• Tenka (kaika), a mysterious fire from folklore that signals a conflagration
• Tenka (wasp), a genus of Fig wasp
• The Japanese rendering of the sinoxenic term Tianxia
• A Japanese morning drama which aired from March to September 2004 on NHK
• Lifeforce Tenka, a video game

Tenka are a type of kaika told about in various areas of Japan. It is written about in the collection of fantastic stories, the Ehon Hyaku Monogatari from the Edo period and in the essay Kasshi Yawa by Seizan Matsuura and other writings, but it is also told as the folklore of various areas.