IntroductionMotion is an essential feature in living systems. Microorganisms autonomously change their nature in response to slight changes in the surrounding environment induced by external stimuli and exhibit unique motion modes. For example, some microorganisms, such as the cellular slime mold Dictyostelium discoideum and the nematode Caenorhabditis elegans, move unidirectionally in response to external stimuli, that is, exhibit chemotaxis. Chlamydomonas and Euglena algae with flagella also exhibit similar behavior in response to light illumination. Various reductive and constructive approaches have revealed that the characteristic motion modes of microorganisms are induced by hierarchical systems, where various chemical reactions and interactions from the molecular to macroscopic scales occur cooperatively. Therefore, unique motion can be induced by the output of tandem reactions based on the designed molecular systems.Recently, artificial objects, such as molecular self-assemblies and polymer networks with the ability to imitate microorganisms, have drawn considerable attention because they represent a simple type of inanimate chemical machinery that transduces chemical energy into mechanical energy 1) . Specific self-propelled objects have been identi-#