Question: how to catch pyukumuku sword?
Answer: In South Lake Miloch, they are found when Fishing at a 1% encounter rate at Levels 11-13, and 60, and you can find them in the Overworld during a thunderstorm at a 2% encounter rate at Levels 14-16, and 60. They can also be found in Rare Dens 76 and 91. In Bridge Field, they are found at Rare Den 44.