I believe you meant to say "Sword of Damocles" or possibly "Sword of Damaskinos" but most likely it is related to "Dr. Ryoan" (also spelled "Ryoan" or "Ryonas"). However I couldn't relate, thus I am assuming based on general knowledge that is related to;
Longsword (or equivalent one-and-a-half hand blade) sword of ryonasis
The legend of the Sword of Ryonasis has had a lasting impact on popular culture, inspiring countless adaptations in literature, art, and entertainment. From fantasy novels and video games to movies and TV shows, the sword has become a symbol of heroism and power, often serving as a MacGuffin or central plot device. I believe you meant to say "Sword of
The next time you read a fantasy novel or roll dice in a dark basement, listen carefully. If the air smells faintly of ozone and forgotten lullabies, look closely at the hero’s blade. If it has a core of frozen lightning and a crossguard that seems to weep silver mist, you will know. From fantasy novels and video games to movies
Unlike legendary blades that merely cut flesh or armor, the Sword of Ryonasis is famed for severing . Legends claim that a single stroke could cut a person’s name from the Book of Life, remove a king’s legitimacy from his bloodline, or even slice the bond between a soul and its mortal vessel without spilling a single drop of blood.