This interactive network visualization displays the character relationships from Les Misérables, with nodes representing individuals and links showing their connections. Users can adjust force simulation parameters through control panels, including charge strength, collision radius, link distance, and X/Y gravity forces. The graph renders as SVG circles and lines using D3 v4's force simulation APIs (d3.forceSimulation, d3.forceLink, d3.forceManyBody, d3.forceCollide, d3.forceCenter). Node dragging and tooltips are implemented with d3.drag, while the simulation alpha value is visualized as a dynamic progress bar.