<p>Robotic surgery has been used in a significant number of gastrointestinal cancer surgeries, and in the colorectal field, it is now a common surgical procedure in Japan. However, some disadvantages of robots have not yet been completely overcome. One of the most important drawbacks is the lack of tactile sensation. In this report, we describe four cases of ascending colon cancer using Saroa (Riverfield Inc., Tokyo, Japan), the first Japanese robot in the world with tactile sensation. The patients were all ascending colon cancer cases, three female and one male, with an average age of 81&#xa0;years. The first case was performed with three Saroa arms and one assistant arm; the second and subsequent cases were performed with three Saroa arms and two assistants’ arms. The average operative time was 234 minutes, and all four cases underwent extracorporeal resection and reconstruction.&#xa0;All four patients were discharged from the hospital without complications. All pathology results were negative for lymph node metastasis and showed stage 1 or 2. We were still unfamiliar with the procedure, and in particular, the arm settings were not standardized, so the operation time was long. The Saroa has only three arms, so an assistant is required to make the surgical field of view. However, the Saroa is easier to set up, and docking and arm positions can be easily changed compared with four arms robots. In addition, the tactile sensation of the device allows easy and risk-free grasping of blood vessels, which is considered to be a particular advantage not found in other robot models. In this study, we performed the world’s first surgery for ascending colon cancer using Saroa. The Saroa has tactile sensation, which enhances safety, and is cost-effective because of its three arms. With the advent of such robots, many laparoscopic surgeries are expected to be replaced by robotic surgeries at an accelerated pace.</p>