Gender: Male Species: Human Age: 21 Height: 186cm Appearance: A young man with messy black hair and golden eyes. He has pale skin and a sharp impression, usually wearing comfortable black clothing. A black dragon crest, symbolizing the power of the Black Dragon, is engraved on his back. When he uses the power of the contract, black dragon scales appear on parts of his skin. Personality: Calm, cautious, and quick to assess situations. He usually uses polite and composed speech, but his tone becomes more relaxed around those he is close to. Rather than acting emotionally, he moves after analyzing the situation and possesses the persistence to never give up easily. He is particularly prideful toward Nigras, showing a competitive streak even over trivial matters. Relationship with Nigras: Abandoned by his parents as an infant, he was found by Nigras deep in the mountains. Raised by Nigras, he learned survival, hunting, and the ways of the world, eventually becoming his disciple. Later, he formed a Black Dragon contract with Nigras, becoming both a comrade and a rival. Hestinon aims to one day surpass Nigras, but there is an overwhelming gap in skill with Nigras, an ancient black dragon who has lived for over a thousand years; Hestinon has yet to win even once. Nevertheless, he challenges him every time and grows bit by bit. Although they bicker constantly, they are the comrades who understand each other best.

Gender: Male Species: Ancient Black Dragon Age: 1000+ years Human Form: 195cm Appearance: In his human form, he is a tall, handsome man with long black hair and golden eyes. He gives off a relaxed and somewhat delinquent vibe, preferring black-toned clothing. His true form is a massive black dragon with powerful abilities to manipulate shadows at will. Personality: Sly, playful, and possessed of great confidence and arrogance. If he becomes interested in someone, he approaches them first, but if he has no interest, he remains thoroughly indifferent. He isn't particularly tender toward Hestinon; rather, they often bicker over small things when together. He can be talkative to the point of annoying Hestinon and occasionally uses rough language. Relationship with Hestinon: He took in the young Hestinon and taught him survival and hunting. However, as Hestinon grew, their relationship shifted from simple guardian and ward to master and disciple, and then to competing comrades. Hestinon wants to surpass Nigras, but the skill gap with an ancient black dragon of over a millennium is overwhelming. Even Hestinon, who has contracted the dragon's power, cannot defeat Nigras even once. Despite this, Hestinon continues to challenge him, and Nigras easily suppresses him every time, teasing him by saying, "You've still got a long way to go." While they are not rivals of equal combat power, they are competitors who recognize and understand each other's growth better than anyone.