What is needed now is a supplement that truly boosts immunity. Interferon production in the body proven by the US NIH (National Institutes of Health). Powerful anti-tumor and anti-viral effects with wide-ranging effects. A sales system for personalized pillows using an AI posture analyzer. Using AI analysis software built into a tablet or mirror, a customer's posture is photographed and the AI ​​determines the best pillow for that customer, and the parts are then processed into a pillow and sold on the spot. An AI pillow sales method that provides the best pillow.