When I talked about Persona analysis and User journey map, I felt tired of thinking of the goal from this work to the design process in the final stage. I can understand why we need this process to understand our potential users and their needs. However, I am just wondering what is related to the design process for high fidelity design or working prototype from these. 1. Prologue I love to listen to the VOC, the voice of customers, which is kind of raw needs, and also like to guess what they need when they use the product. Persona analysis and user journey map show what users’ characters are and how they use the product, when we design the product at the very early stage, I could understand why we need this process, but I still have a practical question. ‘What is related to the product design in the final stage from this output?, and how can I approach this process more quantitatively, practically, or scientifically for the design process in the final stage?’ Of course, in some cases