Akira Kakugo has been fascinated by the beauty of natural flocking exhibited by living organisms, such as groups of birds, schools of fish, etc. In the early stage of his career he came across critical roles of tiny self-propelled biomolecular motors in cell movement, muscle contraction etc. in living beings. Being motivated by the functions of biomolecular motors he had investigated mechanism behind conversion of chemical energy into kinetic energy by biomolecular motors. During his doctoral study he fabricated world’s smallest power device by assembling biomolecular motors. Recently Akira successfully demonstrated swarming in laboratory conditions using self-propelled biomolecular motors. He is now aiming at developing molecular robots in which driving force of the robots will be generated by swarms of biomolecular motors.