AI HOKUSAI: Reflections on Art, AI and Legacy is a comprehensive research report published by the AI Hokusai ArtTech Research Foundation. The edition documents the first stage of the ArtTech Research Project, exploring how artists employ artificial intelligence in its diverse roles — as generator, analyst, mediator, and even as an embodiment of Hokusai himself — to engage with the legacy of the great Japanese master. Combining project analytics, expert interviews, curatorial essays, and documentation of the Art+AI residency and virtual exhibition, the report serves as both an academic study and an artistic record. It captures the evolving dialogue between tradition and innovation, human imagination and technological intelligence, shaping a new understanding of creativity and heritage in the digital age.