The is a Japanese fantasy novel series written by Nahoko Uehashi. The first novel in the series, Moribito: Guardian of the Spirit, has been adapted into numerous media, including a radio drama, manga series, an anime adaption, and a live-action series.

As of 2018, the series is composed of 10 parts, published in 13 volumes. The series has been translated into several languages. In English, Scholastic released the first two novels in 2008 and 2009 respectively.

Setting Moribito is set in a fantasy analog of historical Asia. The setting includes several nations, such as Kanbal, a rugged, Himalayan-like kingdom, and New Yogo, a fertile kingdom that combines elements of feudal Japan and Southwest China. The supernatural plays very prominently into the world of the series, with the physical world being referred to as Sagu and a parallel spirit world being referred to as Nayug.

Characters

Protagonists

Played by: Haruka Ayase A skilled warrior from the faraway land of Kanbal. She is 30 years old. Balsa claims to be a simple bodyguard-for-hire; in reality, she wields her spear in order to save lives in atonement for the eight lives that were taken to protect her when she was a child. Balsa is pragmatic and intelligent and she does not hold much regard for class distinction customs. Despite her deadly skill with a spear, Balsa tries not to kill in combat. As a result, her body is covered with scars. At one point it is revealed that she is the daughter of the former Kanbal King's physician who had discovered that the new King had poisoned his predecessor. Worried that his crime would be revealed, the new King ordered the physician and his daughter, Balsa, executed for treason. To protect his daughter, the physician asked the one warrior he could trust, Jiguro, who was the first of the King's 9 Spears, to take her and run while he stayed behind. Unfortunately, the King sent the other 8 Spears (while holding their families hostage) after them. Her guardian was able to protect her but had to kill all 8 of his former comrades to do so. Later he taught Balsa how to use a spear responsibly after seeing her perfectly re-enact the moves she'd seen him use. During their journey, Balsa becomes attached to Chagum and even teaches him some important lessons in life. At the end of the series, she is seen returning to Kanbal for reasons unspecified but is hinted to be putting Jiguro's soul to rest.

Played by: Kai Kobayashi (season 1), Mizuki Itagaki (season 2–3) The second prince of the New Yogo Imperial Family. He bears the egg of the water spirit, making him the "guardian of the spirit". At first, it is believed to be the reincarnation of the legendary water demon defeated by his ancestor, the first Mikado. Convinced that it would bring misfortune and destruction to the country, Chagum's father secretly orders his death. However, before they can assassinate him, his mother, the Second Queen, hires Balsa to hide and protect him. Later, it was revealed that the egg is a water-bestowing spirit that revives the land once every hundred years upon successfully hatching. The real demon that his ancestors defeated was a creature that seeks to consume the egg before it can hatch resulting in the land suffering an extreme drought for a long time. By accepting the job to protect him, Chagum becomes the eighth and final soul Balsa vows to save to complete her atonement. During their journey together, he becomes emotionally attached to Balsa. At the end of the series, he is appointed the crown prince and hailed as a hero for helping the spirit be born. He bids a tearful farewell to Balsa, Tanda, and Madam Torogai as they leave the palace, thanking them for everything they did for him.

Played by: Masahiro Higashide An herbalist who lives in the mountains. His skill as a shaman are lacking, but he is an accomplished doctor as he would always tend to Balsa's injuries suffered in battle as they grew up together. He also works as a traveling medicine man, trading his wares with the local towns and cities. Tanda has also had a long-standing crush on Balsa that seems to have dated several years before the start of the main story. Balsa acknowledges his feelings for her and in fact feels the same way about him as he does for her, but the two never act on their feelings during the series. At the end of the series, Tanda is seen having dinner with Saya and Tōya, telling them that he will gladly wait for Balsa to return from Kanbal.

Played by: Reiko Takashima An old shaman and Tanda's teacher, who proves to be incredibly competent at taking care of herself. A master of the old ways, she is in-tune with the spirit world, Nayug. It is this relationship that allowed her to discover the spirit's true identity. She is capable of communicating with denizens of the spirit realm. She carries a little rabbit-type familiar that travels in her shamaness hat. She is eccentric and unfailingly blunt but never fails to tell the truth.

Kingdom of New Yogo Royal family

Played by: Tatsuya Fujiwara Due to the belief that Chagum was possessed and that the possession was the reason for the Drought Sign being seen, he ordered Chagum to be killed. The Mikado is the only one able to kill Chagum due to the legend that was how his ancestor ascended the throne by killing an evil water spirit and the belief that only the Mikado could successfully kill it.

Played by: Kae Okumura The mother of Sagum.

Played by: Fumino Kimura Mother to Chagum, she was the one who requested Balsa to become Chagum's bodyguard. While he is on the run she is held under 'house arrest' for helping him escape.

Played by: Kaisei Nakano Chagum's older brother and the heir to the throne, who cares deeply for Chagum. When Chagum's belongings were ordered burned after Chagum was presumed dead, Sagum took over the task to protect Chagum's things. He dies from overwork in his responsibilities as Crown Prince before being able to see Chagum alive again. In the book, there was no mention of him being close to Chagum, and he dies of illness.

Star readers

Played by: Kento Hayashi The youngest master star reader in history and Chagum's tutor. He is among the only three people aware of the hunters that serve in the Mikado's shadow. He investigates the real cause of the drought sign and Chagum's supposed death in secret. When he was growing up he had lived in a fishing village, as a result, he is skilled in riding a horse.

Played by: Mitsuru Fukikoshi A star reader and Prince Sagum's tutor. He is stubbornly dismissive of the events that have been occurring since rumors emerged that Prince Chagum was possessed by a water demon. However, Shuga respects Gakai as a scholar and sincerely requests his help to decipher the tablets in the Star Chamber in order to save Prince Chagum after Sagum's untimely death. At the end of the series, he thanks Prince Sagum for guiding him in helping to save Chagum's life.

The chief master star reader, later entrusted by Shuga with the responsibility of organizing the translations of the Secret Tome. He is dismissive of the knowledge of shamans and looks down at the possible advantage of consulting them for advice. While he does not believe that Prince Chagum should be killed, he does believe that the water spirit in the child is dangerous and must be dealt with.

The Hunters

One of the initial pursuers sent to retrieve Chagum after Balsa leaves with him. He is the head of the hunters, and he respects Balsa as an opponent, particularly when he realizes that she has elected not to kill any of her enemies in spite of the advantage it will offer her in order to protect Chagum. During the penultimate episode, Mon and the other Hunters acknowledge Balsa as a hero and proudly stand beside her in battle.

Played by: Satoshi Matsuda One of the initial pursuers sent to retrieve Chagum after Balsa leaves with him. After securing the prince, Jin attempts to kill him so that Chagum need not die by his own father's hands; knowing though that this act of insubordination would mean Jin's own death. He deems it a favor in return for the kindness that the prince showed him earlier in his life. He uses blowdarts as his weapon.

One of the initial pursuers sent to retrieve Chagum after Balsa leaves with him. He survives the encounter due to Balsa's vow never to take a human life and takes on the identity of the "Chief", a client who quickly wins the trust of Tōya so that Shuga and the hunters can track down Chagum and Balsa.

One of the initial pursuers sent to retrieve Chagum after Balsa leaves with him, which apparently left him with a scar on his nose. He also appears to have a superb photographic memory, as he was able to skim through one of Tōya's order record books and completely memorized the contents.

One of the warriors who wields dual broadswords, but he was defeated by Madam Torogai.

One of the warriors who uses a chain and sickle weapon, but he was also defeated by Madam Torogai.

A hunter who is very skilled in archery.

Another hunter who is very skilled in archery.

Kōsenkyō Downtown

Played by: Seishiro Kato An orphan boy and friend of Balsa, whom he regards as his elder sister. It is later discovered that he and Saya were saved by Balsa, and that is how they became acquainted. This may be the reason why Tōya claims that he would go "through fire and water for Balsa". He is very clever for his age, often haggling with merchants to lower their prices and is always successful in doing so. He teaches Chagum how to barter with merchants as well the basics of gambling.

Played by: Riana Saijima An orphan girl who is a friend of Balsa. Due to Balsa staying at their hut, she and Tōya have to leave the city and end up following Balsa because they would be troubled if the pursuers were to find them again. It is later found out that she has a crush on Tōya.

A slave trader acquainted with Balsa due to her guarding VIPs who did various things that hurt the slavery business. Balsa uses the money she got from the Second Queen to buy and free a bunch of slaves from him. This allows her to not only free the slaves but by journeying home the former slaves create a lot of false leads for the Mikado's men to waste time and attention running them down and away from Balsa and the prince.

A highly skilled smith who forges swords for guards of the imperial court. He was the smith that created Jiguro's spear that Balsa inherited. While reluctant to repair her spear allowing her to fight and kill, he does so after finding out from Mon and Jin that when she had overwhelmed them in an earlier battle, she did so without killing anyone deliberately even though it would have been faster and easier for her to do so.

Kingdom of Kanbal Royal family

Son of the deceased Rogsam; the King of Kanbal.

Ten Clans Musa Clan

Played by: Kōji Kikkawa Balsa's mentor, caretaker, and bodyguard. Originally the leader and strongest member of the king of Kanbal's 'Nine Spears'; he 'betrayed' his country to save Balsa's life. After fleeing Kanbal, they were pursued by the other eight 'Spears'. In a series of pitched battles, Jiguro was forced to kill the men he considered his best friends. He also trained Balsa to wield a spear honorably and with wisdom, and she later inherited his spear after he died. When Balsa's father asked Jiguro to protect her, he at first refused, but later appeared to save Balsa from two of the King’s assassins. Balsa believes that Jiguro helped her because he could not live with the guilt of not helping his friend, as he believed that not helping someone when you are in a position to do so is the equivalent of harming them yourself.

Son of Tonno and Leena, brother of Gina. Part of the Musa Clan.

Sister of Kassa; saved by Balsa at the beginning of Moribito II: Guardian of the Darkness.

Younger brother of Jiguro Musa; a hero and the most respected of the King's Spears.