Satoko Takumaru is a professor at Kaichi International University, Japan. She also teaches at Tokyo University and Sophia University Graduate School. She is also a Certifying Trainer of The International Focusing Institute and has been applying Thinking at The Edge (TAE) for educational purposes. In recent years, she has been developing TAE as a qualitative research method. She wrote some books including Writing With TAE（Thinking At the Edge) and Qualitative research with TAE steps―thinking at the edge: theory and applications.