The Koto-furunushi (琴古主; English: `old master Koto`) is a fictitious being from Japanese folklore. It belongs to the group of Yōkai and is said to be harmless to humans. The Koto-furunushi is very similar to the being Biwa-bokuboku. == Description == The Koto-furunushi has the appearance of a traditional Koto (a Japanese zither), which gr.....