Abstract
Although most of companies introduced MBO to revitalize the organization, MBO does not achieve the original purpose and/or brings unexpected side effects to the companies. In this paper, I argue that the development of Management by Belief (MBB) system should be the main issue to solve this problem. And then, I propose changing MBO interview into "Ba where people talk their belief together." It might be a way to actualize a mutual complement between MBO and MBB.