The Japanese Association of Anatomists (JAA) has been supporting education and research in the field of anatomy in Japan for nearly 130 years. Anatomy has long been studied as a fundamental scientific field with biological and medical aspects, and it aims to understand the functions and diseases of living organisms through their structures. While the field initially relied on the naked eye, anatomy has evolved significantly with technological innovations, such as the development of microscopes. Recent advancements now allow digital reconstructions of large parts of organisms at varying resolutions. For example, connectomics has generated detailed neural connection maps using image data at macroscopic, microscopic, and ultrastructural levels to understand how brains work. This approach has led to the digital recreation of entire nervous systems for an increasing number of species. Such technologies would be applicable to the whole bodies of less-common research subjects and also humans, and critical for the integration of diverse information from other modalities, which give rise to virtual organisms and novel biological simulators. The collaborative effort across different fields will facilitate the life science research toward One Health and will also benefit education nurturing the next generation for sustainable systems.