To obtain this mission, first talk to Yomogi the leader, near the entrance to Grand-Camp (picture1). Then go to the Ice Archipelago to face 20 Izuchi or Baggi which will be indicated by red dots on the map (pictures2and3). Take the opportunity to fully explore this area and collect materials that will allow you to improve your equipment.
After validating your quest, you will improve your canteen by transforming the "Dango Éclair" into "Dango Explosion" (picture4). This food will allow you to sharpen your weapon more quickly and increase the damage of large barrel bombs and mega barrel bombs (pictures5and6).