Imaging and measurement of friction force are required in a variety of fields. If the friction forces originating from the motions of professionals are quantitatively analyzed, the data can be applied to the motion-copying system by a robot. However, weak friction forces have not been visualized and quantified using conventional sensing materials and devices because of their low sensitivity. Here we present a highly sensitive tribo-imaging device based on the cascading responses of stimuli-responsive materials, namely polydiacetylene (PDA) and dry liquid (DL). The weak friction force disrupts the DL, which is composed of liquid droplets surrounded by solid particles. The outflowing liquid under chemical stress changes the color of the PDA. The cascading responses enable colorimetric imaging and measurement of weak friction forces in the range 0.006–0.080 N. Furthermore, the device visualizes the force distribution of handwriting in calligraphy depending on the individual characteristics of expert, practician, and beginner. A high-sensitivity tribo-imaging device can be used to understand various motions.