That Time I Got Reincarnated as a Slime: The Ways of the Monster Nation #3

This third volume of the manga spin-off series focuses on the day-to-day governance and cultural development of the Jura Tempest Federation, as Rimuru and his monster allies establish trade, diplomacy, and infrastructure for their growing nation. It collects chapters from the parallel storyline that expands on the world-building and side characters of the main series, offering a lighter, slice-of-life perspective on monster society.