This interactive network diagram uses D3.js v4 to visualize character co-occurrence in *Les Misérables*, with nodes representing characters and links representing relationships between them. The graph is rendered as SVG, with node colors encoding each character's group (e.g., 1–10) and link thickness reflecting the strength of interaction (linearly mapped to the square root of the link value). The visualization supports zooming via mouse wheel and drag-and-drop repositioning of nodes, with the force-directed layout recalculating positions on every tick. Hovering over a node reveals the character's name via a tooltip. The force simulation uses link, charge, and centering forces to arrange the network, while the categorical color scheme distinguishes the social groups.