The Divine Sword Mercurius (神剣メルクリウス, shin ken merukuriusu) is one of the treasure swords pair that belong to the Principality of Pastillage. Its possession was handed over from the kingdom to Rebecca Anderson in her debut arrival to Fronyard in Dog Days'.
- Jet Broom: mainly used for transportation.
- Large Rifle:
- ↑ Dog Days' official website, character section