In this paper, we use the term "sociality" in contrast with "economy" to indicate performance that creates value for society. To consider "sociality" in business, we require a dynamic system to describe the interactive change between agents tackling social problems and the society. Those who consider the concept of a dynamic system for sociality need to regard themselves as actual elements of the system. In other words, they need to recognize that they can change the system by their own efforts. In this paper, we found that consideration of such a system results in proactiveness, a sense of responsibility, and positive behavior in individuals through our interview research.