; : :The main protagonist of the story and the first prince of the Kingdom of Bosse. Born deaf and tiny in size, he was ridiculed and scorned openly by many within the palace and kingdom. Despite his disability, Bojji dreams of becoming a strong king like his father and always tries to maintain a smile in front of others. He is known for his kindness (which has earned him many unexpected allies), diligence, and intuition, which allows him to read lips and know what people are saying. He also possesses extreme agility and dodging ability unconventional for kings that tend to rely on strength, and like all members of his race is impervious to poison. Following Daida's coronation, he and Kage set off on a journey. :His name is a
portmanteau of two Japanese words "Bocchi" (lonely) and "Ōji" (prince). ; : :A last surviving member of the shadow clan and Bojji's companion. Born to a clan of assassins, Kage was a young child when he witnessed his entire family murdered by the kingdom they served. He subsequently escaped and was exploited by a thug, who eventually sold him out for his ransom. Tempered by the rough way of the world, Kage then grew up using his clan's abilities to make a living off thieving. He eventually meets Bojji and is touched by his kindness and his situation, pledging to be his faithful friend. He is tasked by Bebin to follow and protect Bojji on their journey. :"Kage" in Japanese means "shadow". ; : :Bojji's younger half-brother, the birth son of Queen Hiling and the current king. Like Bojji, he is hardworking and resilient, but possesses a streak of pride and arrogance in his strength that seems to take after their father. Deep down, he is secretly jealous of his brother, who he believes was able to get everyone's love and the position of king without any effort. In the time leading up to his coronation, Daida is manipulated by a Magic Mirror and is forcibly made the vessel for Bosse's reincarnation. ; : :The queen, Daida's mother, and Bojji's stepmother. She used to be more doting and affectionate to Bojji, but following Daida's birth, adopted a stricter and more practical-minded personality regarding royal affairs, ultimately deeming Bojji unfit for rule. Despite being highly critical of Bojji, she treasures him just as much as her birth son, often spending much energy to heal any injuries he sustains. She allows Bojji to go on his journey with Domas and Hokuro, setting their destination to be her parents' home. :Her name is from the English word "Healing" ; : :The greatest swordsmaster in the Kingdom of Bosse, whose sword style reflects King Bosse's strength. He was assigned to be Bojji's tutor and while he treasures the prince very dearly, decided that he would never have power equivalent to his father and gave up on him. In an attempt to reaffirm his loyalty to a single lord, he pledges allegiance to Daida and attempts to assassinate Bojji by pushing him into the Hole of the Underworld. Overcome with regret, he cuts off his right hand later and rescues Hokuro from execution, intending to train him to become stronger. :His name derives from the Japanese pronunciation of the word "
Sword Master". ; : :Daida's teacher who cares very deeply for his lord and has helped keep the Magic Mirror's deadly influence at bay. He wields a curved dagger,
shuriken and is a snake tamer. Under Daida's orders, he tried to assassinate Apeas but was supposedly killed by the latter and sank through the ground, leaving his whereabouts unknown. He sends Kage to accompany Bojji and help him get stronger. ; : :An expressionless commander dubbed "Spear of the King" who is heavily loyal to King Bosse. Once a cowardly man, he trained with monsters under the supervision of Miranjo and earned his current title. He worked with the Magic Mirror to transfer Bosse's consciousness to Daida's body. :His name is an
anagram of the Japanese pronunciation of the word "Spear". ; : :A large man dubbed "Shield of the Queen" who guards Hiling. He originally served King Bosse as 'King's Spear', but was later reassigned to guard the new queen, Hiling. Initially, he was upset by the decision but later was given the opportunity to decide whether or not Hiling was worth his protection, answering in the affirmative. :His name is an anagram of the Japanese pronunciation of the word "Shield". ; : :A low-ranking knight who deeply cares for Bojji after the latter comforted him upon his mother's death. He was ordered to accompany Bojji on his journey and look after his personal care, being the only knight that knew sign language. After Domas' betrayal, his pride as a knight and loyalty to Bojji compel him to return to the kingdom, risking his life to inform Hiling of the news. He is rescued by Domas just before his execution and undergoes training to become stronger. :His name means "
face mole" in Japanese. ; : :The former king and father of Bojji and Daida. He was a giant who yearned to be the strongest man in the world and made a deal with a demon, choosing to steal power from his very own son. Feeling remorseful later, Bosse chose to become king and establish a country to ensure Bojji had everything he ever wanted in life. He is subsequently reincarnated in Daida's body. :His name is from the English word "Boss". ; : :Bosse's first wife and subsequent First Queen of the Bosse Kingdom, and Bojji's birth mother. She was killed by Miranjo when Bojji was young. ; : :A mysterious mirror who advises Daida on his actions. Sealed within is actually the spirit of a woman named
Miranjo, whose body is encased in ice within the palace's basement alongside various other deadly monsters. Miranjo has two masked guards who serve her and was previously involved in Apeas' training to become a high-ranking official. She describes herself as "someone who shared the joys and sorrows of [King Bosse]", later creating an elixir for Daida to become a vessel for reincarnation. Was later revealed to be the childhood friend of the devil but had an unwilling hand in what it became today. She is then devoured by the devil but is saved and forgiven by Daida after the latter learned the truth of her life. ; : :The king of the Underworld and commander of the Order of the Underworld – the most powerful legion of soldiers that slaughter demons and prevent them from wreaking havoc. He has a complex about his face and wide mouth and dislikes his younger brother Despa due to his good looks. However, it does not stop both of them working together in some situations. :His name is an anagram of the name of god
Hades from Greek mythology. ; : :The younger brother of Desha and Despa and former commander of the Order of the Underworld. He once was a kind-hearted prince who swore to found an order of knights that shared his values. He also holds the title of 'Sword King of The Underworld' due to his master skills in swordsmanship. After unwillingly receiving true immortality, an ability that also slowly consumed his humanity, he became a remorseless monster that inflicts pain on his victims. :Due to his madness, both of his brothers have no choice other than to imprison him in the Underworld, where he remained until freed by Miranjo to conquer the Bosse Kingdom. :His name is an anagram of the Japanese word "
Ken-ō" (means "
Sword King"). ; : :The middle brother of the king of the Underworld and Ōken. Unlike his older brother, Despa is much weaker, vainer and money-minded. He takes Bojji and Kage into his care and promises to train Bojji up to become stronger (for a price). ; Devil : An unknown creature that came out of Bosse's mouth after the king's death. He is known to grant wishes at a certain price and does so at the detriment of others. Originally a kind, childlike entity who befriended Miranjo, he became a monstrous, sadistic and nearly immortal creature. It is said from an old prophecy that Bojji is fated to kill the Devil, but given the presence of others, it is not known if this devil is the devil that was mentioned. == Media ==