Kumo no Kaidan (雲の階段, Cloud's Stairs) is a 1982 Japanese novel by Junichi Watanabe. The story has been adapted for television three times.
The 1983 television adaptation was titled Kumo no Kaidan: Nise Ishi o Meguru Onna Futari (雲の階段 ニセ医師をめぐる女二人).[citation needed]
The 2006 adaptation is a Korean show titled Cloud's Stairs (Korean: 구름계단).[citation needed]
The latest adaptation stars Hiroki Hasegawa as the main character. This series began on 17 April 2013.[1][2]