This network visualization maps character co-occurrences in Victor Hugo's *Les Misérables*, using color-coded nodes to represent categorical groups such as Document, Location, and Person. The force-directed layout, driven by `d3.forceSimulation` with link, charge, and centering forces, positions characters and their relationships. A color legend, built with a custom `colorLegend` function and `d3.scaleOrdinal`, clarifies the group assignments. The SVG rendering uses a loaded JSON dataset, and link thickness encodes relationship strength.