Kokuran shows an old windmill in a marshy grassland landscape, about to be engulfed in a heavy rainstorm, and the deep black cloud of the upper area was printed three times with concentrated sumi (charcoal ink) to make a dense velvety black, against which stripes of silver rain stand out. Sharp eyed viewers might notice the lower rain just above the horizon is printed in two colours, blue-grey and blackish purple, to give more depth to the distance. The farthest heavy rain on the left is printed with baren sujizuri (printing with the edge of the baren to create lines), so each print is slightly different.
