This visualization shows the network of character interactions from Victor Hugo’s *Les Misérables*, using a force-directed layout to cluster characters into groups by their relationships. Nodes represent characters and are colored by their group; links represent co-appearance, with thickness proportional to interaction weight. The example uses D3 v4’s `d3.forceSimulation` for the physics engine, `d3.forceLink`, `d3.forceManyBody`, and `d3.forceCenter` to shape the layout, and `d3.drag` for interactive node dragging. Data comes from the included `miserables.json` file, rendered as SVG elements.