This study focuses on the management of developing hybrid products by combining 3D computer graphics and hand-drawing in the Japanese animation industry. The paper explores functions of product development during a coexisting period of new technology and similar current technology. It is clear that a manager of new technology department mainly contributes to the construction of architecture of a hybrid technology. In addition, so-called “adaptive” engineers mainly contribute to the reconciliation between engineers of the new technology and those of current technology.