Two legendary swordsmiths who are currently residing on the katanas they forged, Masamune and Muramasa, have shown their prowess today. Although he was in his ethereal form, Masamune didn't wane his power as proof that he can give out strong energy of mana from just the sword alone. On the other hand, Muramasa might have not used his ethereal body and chosen to possess Maple's body instead but that doesn't mean he was weaker than Masamune, he possessed Maple so that her body can withstand the curse of the creature if she ever gets to contract it. Also, while using her body as a medium, it seems that Muramasa can release much stronger power than when she was just by herself.