You have left many sketches and drawings of water. You studied flows of water by rivers, by ponds, and by fountains; these are very precise.
You would put a stick or a board in the flow, and depicted how the water changed its movements depending on the resistance it received. The sketches were well illustrated with bubbles and swirls with agogics strokes.
I also depicted the movements of water on Ryusuimon; how rocks in the river change the flow, how the water flows in between rocks, how flow changes after the right and left currents merge together, and so on.
You also have left many sketches on plants and animals. However, I noticed that your strokes in those drawings are based on or imitated the flows of water. In your sketch of Star of Bethlehem, I can see the plant stretches each one of its leaves with beautiful curves. The curves are so similar to the one of water which flows over the surface when it reached to the maximum. The flower is drawn symbolically as a growth of living beings. Moving and flowing is negation of retention and stopping, and is a proof of life.
I assume your interest in water is your ultimate question for everything; you quested roots of every flows in water and regarded water as a form of life. I also started to think water as a bond of everything. Physically, everything on the earth is soaked in water, isn’t it? That is why, I think, one needs to know and study the flow of water in order to see the world.