How teachers acquire phronesis and grow as a teacher. It has become an urgent issue to convey phronesis to young teachers, the number of which are increasing every year. Indeed, the Board of Education has planned training and even placed supervisors in order to improve the quality of teachers. However, can phronesis really be acquired through such measures only? Through training which is delivered by mainly giving out contents, it’s difficult to see what exudes out from teachers themselves. I think that actions of feeling messages using body that cannot be delivered with just words. This is defined as "emotion". Teachers live in a three-tier worlds of "children", "school and colleagues" and "society and parents." It is important for teachers to learn" tacit knowledge using “body” through "sharing of emotions" in respective worlds, and transform such knowledge into a solid power. Verification is performed using a real example of a first-year teacher.