ODIN is an Obsidian plugin that knowledge-graphs your notes, facilitating intelligent question answering, link prediction, and other capabilities. It helps users manage knowledge points and build comprehensive knowledge systems. Key features of ODIN include: LLM-powered intelligent question answering for direct querying of knowledge points within notes; global note network visualization, presenting note content in a knowledge graph format; semantic-based link prediction, automatically establishing connections between notes; and semantic-based node suggestions for discovering key knowledge points within notes. ODIN significantly enhances Obsidian's knowledge management capabilities and is an essential tool for authors building their personal knowledge management systems.