An unprecedented business model made possible by the 2013 revision of Japan’s Insurance Business Act. Reorganization by Function calls for making the most of the strengths of each group insurance company while undertaking business reorganization. While enabling the bypassing of the negative aspects of simple corporate mergers–including temporary costs and the business impediments, time losses, and various other problematic factors that often arise at the time of mergers–Reorganization by Function is designed to realize smooth business integration without slowing the speed of business growth, and it concurrently enables the leveraging of individual companies’ strengths and the realization of efficiency in the pursuit of business scale and profitability.