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· Jiro is a boy with the special ability to communicate with animals.
· However, perhaps because he was still young, he was only bullied and treated as a supporting character.

· Ten years later, Jiro has grown strong enough to subdue thugs with a single kick.
· This is because Jiro's family is actually a ninja clan, and he has been learning ninja techniques since childhood.

· With the help of a crow, Jiro discovers a dying cat in the forest and rushes to rescue it.
· The cat, regaining consciousness, shows wariness towards Jiro, who understands its words.

· This cat was a being called 'Monoke' that had lived for a long time.
· The cat, after encountering a group of Monoke, refuses their offer to become companions, but Jiro is not particularly surprised by the existence of Monoke.

· Nachi was a cherished being by his grandfather and a grateful presence who always comforted the young Jiro when he was struggling.
· Thanks to Nachi's comfort, Jiro was able to endure the hardships of his childhood.

· A mysterious organization is chasing through the forest where Nachi had collapsed, and a mysterious man is tailing them.
· The man's true intention was not to follow the organization, but to pinpoint Nahu's location.

· Jiro feels that if he gets involved, he will die, but he fights the Monoke group to save Nachi.
· The Monoke suggest that Nahu should eat humans to regain strength.

· Nahu enters Jiro's body, which has become a spirit.
· The mysterious organization watching from afar is also taken aback.
· Nahu pierces the Monoke with a giant black spiritual spear.

· The mysterious organization 'Onmyokoku' is a shadow organization of the government, responsible for espionage and information manipulation.
· Shiba and Ichika, belonging to the Special Operations Unit within Onmyokoku, are tasked with monitoring and eliminating Monoke.

· Shiba and Ichika are astonished to hear Jiro's explanation that he fought Monoke to protect an injured cat.
· The grandfather tells Jiro to realize that he is a dangerous being.

· Jiro claims he has an urgent matter and escapes the hospital with the help of crows.
· He informs his grandfather that he will be away for a while.

· The grandfather, like a ninja, appears stealthily and takes Jiro to the school athletic field.
· Jiro is surprised to learn that his grandfather is a ninja from Onmyokoku.

· The grandfather worries about Jiro, who has provoked Nahu, the legend of Monoke, and recalls the past.
· He fears that Jiro's righteous good deeds might one day lead him down a dangerous path.

· The grandfather tells Jiro to give up, saying that Onmyokoku is a place that cannot be endured without considerable resolve.
· However, Jiro persuades his grandfather, stating that solving his own problems is his unique ninja way.

· Jiro could not defeat his grandfather in pure strength, but he persuades him by bringing up an old story.
· In the end, the grandfather accepts Jiro and decides to support him with love rather than worry.

· The next day, Jiro is escorted to Onmyokoku by Ichika.
· After bidding farewell to his grandfather, he boards the escort truck.

· Suddenly, a barrier of yogi, not fog, appears, and Monoke attacks.
· Ichika fights a Monoke with ironclad skin that bullets and swords cannot penetrate.
· The yogi barrier is a special space cut off from the outside, and currently, only Jiro can help Ichika.

· The goal of Onmyokoku and Monoke is to monopolize Jiro and Nahu.
· Nahu states that both factions, treating them like objects, are the same.

· As the truck is half-destroyed and Jiro is freed, he decides to help Ichika.
· Ichika lost her mother at the age of five and, despite the finger-pointing of those around her, resolved to hone her ninja skills and inherit her father's position as clan head.

· After the battle with Monoke, the three safely exit the barrier.
· This event brings Ichika and Jiro a little closer, and since the truck is broken, they decide to walk.

· Shiba reports information about Jiro and Nahu to the leaders of Onmyokoku.
· To manage the Monoke, which have recently begun to appear in large numbers, the special covert unit 'Black Torch' is established.
· Black Torch is created based on Shiba's proposal that Monoke management would be easier with Jiro and Nahu.

· Jiro is freed after all examinations but has nothing to do as the Black Torch base is on the outskirts.
· The Special Operations Unit had little to do unless Monoke appeared, making them practically unemployed, and the base building assigned to them was an old container warehouse.

· The five elite members of the Black Torch unit arrive, and Rei and Jiro immediately clash.
· The anime 'Black Torch' is a story about the descendant of a ninja who can talk to animals, trying to live as an ordinary high school student but being led to the path of a ninja by fate.
· The art style and direction, typical of shonen manga, were good, and the character designs of Nahu and Ichika are captivating.