Cavalier of the Abyss Wiki



Osky's Evil


Male.png Male




160 cm (5'3")

Hair Color

Dark Brown

Eye Color


Professional Status

Regis Nex, formerly
Osky, formerly

Previous Affiliation



Current Regis of Chaos

Previous Occupation

Osky's Evil

Previous Team

Osky, Xix, and Crew

Previous Partner(s)


Personal Status



Osky (Creator/Father)


Undead Abilities

Image Gallery

Just is the name Ouroboros takes on after sealing himself inside a deceased body to pose as Regis Nex's son. In further chapters, it was proven that Just is definitely not Nex's son.


Just's appearance is very similar to Regis Nex when he was young. Some say that he is his younger version. Just is displayed as being both light-hearted (always wearing a fake smile) and cruel (his face takes on a demonic appearance). A demonic appearance of Just can be seen randomly throughout the story. In his demonic state his face takes on a form similar to a jack-o-lantern. Just wears a long black jacket over a white business shirt. He also wears a loose bow-tie that hangs below his neck.


Just appears as a happy-go-lucky teenager always wearing a smile. All of this is an act as he loves to torment others for his own amusement. Usually, he likes to play mind games with whatever a person fears most. Just is great at manipulating people in order to attain whatever it is he desires. Just is very sadistic in his actions because he is truthfully a snake demon called Ouroboros created by Osky. Osky refers to Just (Ouroboros) as a perfectionist which he considers both a positive and negative quality.

People should be concerned if Just takes an interest in them since good things never follow his desire to examine the person of interest. He takes great pleasure in mentally and physically, sometimes in a sexual manner, torturing people who intrigue him. Perhaps, he considers this as a way to get more closure on the individual's true self. Ninoorut, Xix, Osky, and now Siana have been tortured due to Just's interest in them.


Ouroboros' soul is released

The human who Ouroboros seals himself in was originally deceased.[1] After Osky and Navarus form the contract Ouroboros' soul was released from its confines and took refuge in the deceased human's body.[2] After the merge was completed Ouroboros took on the name, Just. Just then met up with Navarus and they left to interrupt the wedding ceremony.


Just's true form, Ouroboros, a snakelike monster, is shown briefly as Navarus and Osky form a contract. Ouroboros is released from his confinement and seeks out a recently deceased corpse to take refuge in.[3] After being awaken in the demon body he names himself, Just. At some point he met up with Navarus and the two went to interrupt Ninoorut and Yuan's wedding commencement party.

Just ready to attack Xix

Just appears before a possessed Xix; the demon Skoll took over his body, and Crown Prince Ninoorut, who had been dueling beforehand.[4] Just is able to easily defeat Xix and is amused when he sees how weak Xix is when his demon brother Skoll is possessing the boy. Right before he is able to land the finishing blow, Regis Nex stops his attack.[5] Just, still not used to his newly contracted body, begins to spew blood which Nex mocks him over. Just is put in a bad position when Regis Nex demands to know if he is truly the son of Serin after the demon proclaims himself the true heir in front of the entire court. He puts Just to the test by asking about the whereabouts of the demon stone Semek, who belonged to Serin. Just is worried over what response to give, but manages to come up with a decent answer to appease the Regis.

Just shows his true nature to Navarus

Rumors begin spilling throughout the kingdom over who is the true heir-Ninoorut or Just? Just takes every opportunity to antagonize Ninoorut's insecurity over the possibility of not being the true son. Just continues working with Navarus, who is seeking his confined daughter Serin. Sensing the growing stress Ninoorut has over his belief he is not the heir, Just takes further advantage of this fact by taking the prince to Serin's chamber.[6] His reason is that the Regis has taken great lengths to keep the "Great Betrayer" under constant supervision and close enough for him to keep a watch over. Also, Just learns of Ninoorut's interest in the captive.

Just leads Ninoorut to Serin's seal

Leading Ninoorut through the booby traps, they come to stand before the prisoner and Just claims that Serin is the only woman the Regis has ever truly loved.[7] Ninoorut is horrified of seeing the woman imprisoned and Just further claims how strange it is that the Regis still shows such interest in a woman who betrayed him since he still keeps her confined and is said to periodically visit her. Just concludes the Regis either wants to continue his torturing of his past lover or refuses to part with her so is using twisted means to keep her close. Then, Just jumps into the topic of Iffrita claiming to carry the Regis's child. Just hints that the Regis only allowed Iffrita to stay due to grief over Serin's betrayal and lack of concern for checking about the woman's credibility in her claims.[8]

Just wounds Ninoorut and steals his blood

During another one of their confrontations, Just wounds Ninoorut and leaves thinking to himself he got what he came there for as he licks his lips revealing his theft of Ninoorut's blood during his attack.[9] When Just finally reappears after the other teenagers journey into the past, he is telling Navarus not to worry so much since he has everything under control.

The Regis hosts the Seal ceremony and Just begins to mentally assault Osky's mind after learning he is present. Just warns his master not to interfere with his game or else he will face the consequences. When the Regis asks the three boys who will begin. Just automatically jumps to the challenge.[10] Just cuts his wrist and gloats over the fact that Ninoorut is so nervous since he still doesn't realize what his blood is capable of. It is then shown he uses the blood he stole from Ninoorut to open the seal, after qualifying for the son he is quick to flaunt this success before the whole court before waltzing off to stand next to Navarus smugly.[11]

Powers & Abilities

  • Regeneration - he can reform torn skin and can even make his body develop new skin when his body gets caught in an explosion.
  • Paralysis - Just uses a paralysis style attack on his creator Osky numerous times to halt the man in mid-speech or action whenever he does something Just doesn't agree with.



Although Just considers Osky as his "father," he does not view Osky in an affectionate manner and continuously mentions how he would prefer ripping his father apart than offer love. Technically, Osky is his master, but holds limited power over Just. Just finds great pleasure in abusing Osky's crow form and has even tried to land a few lethal strikes on Osky's true form. While Osky has managed to avoid fatal injuries he barely misses Just's blows by a hair.

Demon Navarus

Just works with Navarus since he is bound by a contract made from Osky; however, all his actions are for his own benefit. He could care less if Navarus is successful in attaining the throne since Just views everything as a game and has his own objective in mind. When Navarus orders Just to obey his commands Just is quick to remind the former clan leader how he was the one who sought Ouroboro's powers therefore he should remain humble. The once proud Navarus is forced into submission and has been seen as anxious in the demon's presence.

Ninoorut Noah

Just enjoys antagonizing Ninoorut because he is amused by Ninoorut's impulsiveness. Just loves getting a reaction out of people and Ninoorut acts upon his emotions easily. Just teasingly refers to Ninoorut as his brother but often remarks mentally how Ninoorut is ignorant of his true position in the grand scheme of things. Just has made Ninoorut one of his key players in the battle over whose the true heir.

Just's actions through out the manwha are one of the major factors for Ninoorut's decision to switch sides and join the Night Clan. Even after joining the organization and regaining a sense of self-confidence Ninoorut still manages to lose his composure when Just is involved. With a few quips on Ninoorut's blood-line and a few whispers of deceit into the former prince's ear Ninoorut makes himself into an easy target for Just's corruption. Just has slowly and intimately corrupted the prince into developing negative feelings and animosity towards his family and clan. Unfortunately for Just, Caladborg and Siana's acceptance has slowly helped the prince better learn how to ignore Just's chides.

The manwha ends with Just fashioning himself as newly appointed Regis and claims Siana will be his wife. A clearly disproving Serin and mind-wiped Ninoorut are now at his mercy.

Regis Nex

Just plays the role of a son trying to win his father's approval, but learns early on Nex is not fooled by his tricks. Just finds Nex interesting since the Regis is not one to be easily riled up by Just's actions. Nex is one of the few people who has intimidated Ouroboros into silence since Just loves the sound of his own voice.


Just views Xix as an idiot and loves to pull pranks on him. Just is the one who tells Xix about the possibility of Serin being his mother: later proven to be false claims. (Just may have told him just to get a reaction). However, as time goes on, Just begins to view Xix as another piece in his puzzle and questions just what role Xix will play. Xix's ability to internally maintain Skoll without losing his mind or soul has made Ouroboros highly interested in the teenager.


Just appears to have a deep love for toying with any kin related to Regis Nex. Just as he rejoices in harassing Ninuroot, Just appears to have a sadistic fondness for physically and mentally torturing Siana because she fascinates him. Unlike the others, Just shows an increase in maliciousness when dealing with Siana as he enjoys sexually harassing her besides his other forms of torture. While Just sometimes toyed with Ninuroot by encroaching on his personal space, Just takes it the extra mile with Siana by tying her up and shifting through her memories without her consent. Upon learning she is an undead, he claims it adds to her desirability since he finds her fascinating as a rebel princess.

Whenever Just flirts with her, Siana is displayed as extremely uncomfortable and shows no reciprocation for his implied affections. Then again, Just just enjoys toying with people for the sake of adding drama and stirring the pot. Seeing that Siana is the daughter of Regis Nex and Serin, twin sister of Ninuroot and half-sister to Miya, along with sharing statuses as a princess and rebel, it's little wonder why Just considers her important to his plans. At the end of Cavalier of the Abyss, Just has fashioned himself as the newly appointed Regis and claims Siana to be his bride. Siana does not appear to approve of this as the manwha ends with her struggling against him and refusing his betrothal.


  • "My, My. When someone is in ecstasy, you really shouldn't interrupt... Brother. As long as Osky left your life in my hands, the person to kill me... Ouroboros." - Just to Xix, in Chapter 10.
  • "I won't forgive you if you interfere, thought you may be my father." - Just to Osky, in Chapter 44.
  • "I shall go first. It's only fair that I get tested first, since my side requested it. Plus, I want to set a good examlpe as an older brother. Oops... I guess we won't know whether I'm an older brother or not until after the test, huh? I hope I can be accepted as your real brother with this." - Just to Ninoorut, in Chapter 44.
  • "It won't be fun without unknown variables. If not it would just be boring right?" Just develops an interest in Xix, Chapter 57.
  • "Do you see that? The main actress has arrived--oh right, you're blind huh? I'll explain." Just eagerly watches Iffrita Noah's execution with a captive Rana, Chapter 117.
  • "Ahh, this is boring... When will this trial end? If it's gonna take this long... I wish they can just kill her off quickly." Just grows bored as during Iffrita's execution, Chapter 118.

Chapter Appearances


  • He is the Demon beast Ouroboros, who is inhabiting a body.
  • Regis Nex knows that Just is not his bloodline.
  • Just considers Osky as his creator/father, but has no problem with disobeying Osky's orders.
  • His new goal is to kill Xix.
  • Just, who enjoys getting into characters' personal spaces, takes this steps further with Ninuroot and Siana. Out of all the people he torments, these two often receive the worst end of the stick. Whether it is due to their status as Nex and Serin's children or their fiery personalities he finds them fascinating.


  1. Cavalier of the Abyss chapter 4, page 8
  2. Cavalier of the Abyss chapter 8, page 21
  3. Cavalier of the Abyss chapter 8, page 23
  4. Cavalier of the Abyss chapter 10, page 3
  5. Cavalier of the Abyss chapter 10, page 18
  6. Cavalier of the Abyss chapter 17, page 5
  7. Cavalier of the Abyss chapter 17, page 6
  8. Cavalier of the Abyss chapter 17, page 18
  9. Cavalier of the Abyss chapter 43, page 20
  10. Cavalier of the Abyss chapter 44, page 11
  11. Cavalier of the Abyss chapter 44, page 24