ARO is a robot that tidies up disordered desks and chairs in classrooms. Using indoor autonomous driving, it can recognize desks and chairs and carry them to a location that a user wants. The head performs vertical movements to lift desks and the back lifts chairs. Designed by Minji Sim, Jaesuk Jang, Sumin Ko, Sungmo Lee, and Kicheol Pak of Hongik University.