A force-directed network graph displays characters and groups from *Les Misérables*, with nodes colored by category and directed links styled by relationship type, such as email or mention. The visualization relies on `d3.forceSimulation` with `forceLink`, `forceManyBody`, and `forceCenter` to position elements, rendered as SVG circles and lines. A custom `colorLegend` function generates two legends, using circles for node categories and rectangles for link types, while drag interactions let users reposition nodes. Data loads from a JSON file, and edge colors and arrow markers highlight connection semantics.