This interactive force-directed network graph visualizes character relationships from Victor Hugo’s *Les Misérables*, with nodes representing characters and links showing interactions. The code uses D3 v4’s `d3.forceSimulation` with link, charge, and center forces to position nodes, while SVG elements render colored circles and text labels. Dragging nodes is enabled via `d3.drag`, and link thickness reflects interaction strength from the miserables.json dataset.