In Chrono Trigger, the Masamune acts as a weapon of Frog's, gained as an equipable item once the party travels to the Magic Cave after Frog joins the party permanently. In a flashback, Cyrus wields it to stop Magus, but fails. Masa & Mune make a reference to Cyrus being the last person to successfully scale the mountain and arrive at the resting place of the legendary blade. When used upon Magus, it can lower his defense massively to standard physical attacks. One half of the blade resides with Frog's Burrow and the other half is guarded by Masa & Mune atop Denadoro Mountains. After recovering both parts, the sword is taken to Melchior in Medina for repairs, since he was the blade's original creator. The swordsmith informs the party that Dreamstone is needed to resurrect the sword and bring it to its former glory. Traveling to Prehistory, a specimen of the precious stone is received from the chief of a small village. Once the sword is repaired, it is presented to Frog.
>Masamune was a sword smith like Tubal Cain
kikepedia/wiki/Masamune Masamune (??), also known as Goro Nyudo Masamune (??????, Priest Goro Masamune, c.1264–1343),[1] is widely recognized as Japan's greatest swordsmith. He created swords and daggers, known in Japanese as tachi and tanto respectively, in the Soshu tradition. No exact dates are known for Masamune's life. It is generally agreed that he made most of his swords in the late 13th and early 14th centuries, 1288–1328. Some stories list his family name as Okazakii, but some experts believe this is a fabrication to enhance the standing of the Tokugawa family.[2]
https://chrono.fandom.com/wiki/Mammon_Machine The Mammon Machine is a large bio-mechanical creation in Chrono Trigger, existing during Antiquity. It harvested the power of Lavos for the Enlightened Ones.
