This bar chart displays the in-universe bounties of Yonko and Worst Generation pirates from *One Piece*, with values formatted in billions using `d3.format`. It demonstrates custom axis styling by removing default domain lines, adding rotated axis titles, and applying tick marks with `d3.axisBottom` and `d3.axisLeft`. The data is loaded from a CSV file and rendered as SVG rectangles using `d3.scaleLinear` and `d3.scaleBand`.