Eris Boreas Greyrat/Powers and Abilities

Physical Abilities

 * Rudeus considers Eris a prodigy in terms of raw talent. Through out her life, Eris is trained by prominent people in the sword, mainly in the Sword God Style by Ghislaine in her youth, by Ruijerd Superdia after the Teleport Incident and in North God and Water God Styles during her time at the Holy Land of Swords. Because of this Eris possess physical prowess, speed and endurance capable of fighting multiple enemies regardless of their sword style rank. Eris is also very nimble and agile, being able to do acrobatic moves and jump at heights twice or more then her height which makes her an unpredictable enemy on where she can attack.

Sword God Style

 * Sword God Gal Farion took interest in training Eris after hearing her intent to cut down the Dragon God, a dream that they both share. After completing her training in the Holy Land of Swords, Eris has attained Sword King rank. When she became Sword King, Gal Farion offered her the chance to challenge him to become Sword God, an opportunity that not even Ghislaine was given when she first became Sword King. Eris' talent was so greatly recognized by Gal Farion that if Eris actually wished to, Gal Farion would have allowed her to become Sword Emperor by fighting Ghislaine who was also a Sword King.

North God Style

 * On her first few years in the Holy Land of Swords, Eris is trained by Auber Corvette the North Emperor in the North God Style. After on year, Eris reached the rank of 『North Saint.

Supard Bloodlust Technique

 * Ruijerd taught Eris a high level Supard technique to unleash her bloodlust (also known as killing intent) like using her gaze to provoke her opponents. This release of bloodlust caused her opponent to sense violent emotions as if they are encountering a monster on the roadside when they see Eris which causes even Reida Reia to have goose bumps on their first meeting and almost reflexively draw her sword which is unusual for a Water God Style user to attack first.

Magic Abilities
Beginner Magic

She reached beginner level magic after being taught by Rudeus. She can conjure fire, appeared to be used to burn Gal Farion after she defeated him.

Nameless Sword
A sword made by Yulian Jalisco that doesn't lose it's edge. Rudeus received it from Rowin Migurdia in Volume 3 as a thanks for telling him of Roxy's whereabouts which he then gives to Eris. The sword is a single edge falchion with a curved blade where the edge side is vastly wider than the back side and has two red ornaments on its blade ridge. The blade is also attached to both ends of the cross guard and has a knuckle bow. She fights with it using forward grip style and sheathes it horizontally behind her waist.

Phoenix Elegant Dragon Sword
Dragon Emperor made and gave this sword to the first Sword God. It has the ability to nullify, or weaken (e.g. for strong opponents such as Orsted), Battle Aura. Eris received it from Gal Farion, the current Sword God, in volume 16 as a gift for being titled Sword King.

Yubi Ori [Prominent]
Yubi Ori or Prominent is a sword made by Yulian Jalisco, one of the 48 demon swords. Rudeus received it from Orsted and passed it on to Eris in volume 17. It is worth about 100,000 Asura gold coins.