A hybrid of the mechanical and Al with second finger joints that realizes "massage comfort" that surpasses human hands. The ultimate goal of a massage chair is to catch up with and surpass professional human massage techniques. In order to realize this, there is a need to reproduce the movements of human hands and surpass human massage techniques. In pursuit of "massage comfort that sur-passes human hands," FAMILY INADA started learning from humanbeings at an early stage and continued research on the movement ofhuman hands, finally succeeding in the development of a mechanismhaving first and second finger joints. What is required next is therhythm of movement. When a professional massage practitioner performs a massage, the rhythm varies according to muscle stiffness and difference in physical constitution and the massage is performed on those having stiff muscles and not just in a strong manner but deeply and slowly, and once unstiffened, changing to rhythmic movements.Like with any industry, there are good professional massage practitioners and poor ones, and this difference is due to technique. While humans can control their hand movements by their intelligence, ourmassage robots can master and reproduce subtle movements as if a professional massage practitioner is performing a massage.