ja

pnpm dlx shadcn@latest add https://opensourceicon.com/r/circle-flags/ja.json

<svg xmlns="http://www.w3.org/2000/svg" width="96" height="96" viewBox="0 0 512 512"><mask id="circleFlagsJa2"><circle cx="256" cy="256" r="256" fill="#fff"/></mask><g mask="url(#circleFlagsJa2)"><path fill="#eee" d="M0 0h512v512H0z"/><circle cx="256" cy="256" r="111.3" fill="#d80027"/></g></svg>