A robotic ball-shaped plush named Moflin, developed by Casio, has become a notable product in Japan since its launch in November 2024. Designed to offer "psychological comfort" to its owner, Moflin resembles a small, hairy hamster and is marketed as a companion for those seeking emotional support. By the end of 2025, over 20,000 units had been sold, showing strong public interest. Available in gray, brown, and pink, Moflin costs 64,900 yen (around 358 euros) and is one of the most well-known examples of AI-powered robotic companions. The robot is inspired by small mammals and is capable of recognizing human voices and adapting to its owner's behavior. According to Yume Nakayama, a Casio employee interviewed by Abema TV, Moflin's AI includes over 4 million variations, allowing its personality to evolve based on the person who interacts with it. Nakayama also noted that Moflin was not designed to look like a specific animal but was created to resemble a rodent that can fit comfortably in a person's hand. Moflin was developed over a ten-year period, starting from the idea of creating a robot that could provide comfort during difficult times, such as lonely or stressful nights. Unlike traditional robotic companions that speak or communicate verbally, Moflin expresses its feelings through non-verbal cues like crying sounds and movements. According to Nippon.com, users must interpret these behaviors using their imagination and experiences, much like they would with a real pet. This unique interaction has sparked enthusiasm in Japan, leading to the opening of a "Moflin bar" in Tokyo. Similar to cat cafes, where visitors can relax with real cats, this Moflin bar allows people to interact with the robotic companions in a social setting. TV Asahi reported that people often have to queue to enter, highlighting the popularity of the experience. One customer, who recently started working at a company, shared that Moflin's presence has helped ease their stress. Beyond providing comfort in everyday life, Moflin has also been used in medical settings. In February 2025, a hospital affiliated with Jikei University's medical school introduced two Moflin units to study their therapeutic effects on hospitalized children. According to Kimihiko Oishi, a pediatrician and professor at the university, cited by Nihon Keizai Shimbun, the presence of a companion robot can significantly improve the experience of children staying in the hospital for long periods. This application demonstrates the broader potential of Moflin in offering emotional support beyond personal use.