Located on the bank of an artificial pond at the exit of the metro station Osaki. The project deals with the “duality between liquid / solid, real / virtual and water ripples / light waves. Pedestrians walk over a 6 x 6 meters large LED plane, installed right on the edge of the water. The LEDs are covered with translucent glass diffusing their light. With their steps, the passers-by provoke virtual waves on the LED plane, computed in real-time. When these waves hit the edge of the pond, they are extended into the water as real ripples.