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A Dangerous Ninja Hides Among Students in School | Full Movie Explained in English

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A Dangerous Ninja Hides Among Students in School | Full Movie Explained in English

Under Ninja (2025) delivers a unique blend of action, dark comedy, and modern espionage. The story follows a hidden ninja organization operating secretly within present-day Japan, where one low-ranked ninja is assigned an unusual mission that leads him into a high school. As ancient ninja traditions collide with modern society, the film explores identity, secrecy, and survival through intense action sequences, sharp humor, and unexpected twists. This movie stands out with its grounded realism, stealth-driven combat, and a fresh take on the ninja genre, making it a must-watch for action and thriller fans.



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Transcript
00:00The story begins in Japan, where more than 200,000 powerful ninjas exist.
00:04They appear to be ordinary people, but in reality, they live extremely dangerous lives.
00:08Suzuki is a low-level ninja who blends into normal society while working as a magazine editor.
00:13One day, she suddenly receives a secret message.
00:15She quickly says goodbye to a writer and rushes toward a bridge.
00:18When she arrives, she notices a Russian man known for hunting ninjas.
00:21She has been assigned a mission to eliminate him.
00:23The man opens fire on Suzuki, but she swiftly dodges the bullets.
00:27She counterattacks by striking him with her heel, which instantly transforms into two sharp daggers.
00:32The man narrowly avoids the attack and continues shooting at her.
00:35Suzuki dodges again and throws several ninja stars at him.
00:38She then closes the distance and kicks his jewelry.
00:40Despite her efforts, the man remains unstoppable.
00:42Even Suzuki's electric baton fails to affect him, and he knocks her to the ground.
00:46Another ninja observes the fight from a distance.
00:48His name is KTO, a high-ranking ninja.
00:51He is about to shoot the man when, at that moment, a toothpick pierces his arm.
00:54As he turns around, he sees a young man running toward him.
00:57This young man is also a ninja named Kuro.
00:59Kuro easily overpowers the Russian man and finishes him off with a chokehold.
01:03Afterward, he tells Suzuki that he is leaving and that she can handle the rest.
01:06Suzuki is left in shock.
01:08She wonders what kind of man would walk away and let someone else take credit for his actions.
01:12Kuro calmly replies that he does not want to do too much work and just wants to go home and
01:16sleep.
01:16Although Kuro is highly skilled, he is also extremely lazy.
01:19He quietly leaves the scene.
01:21Kuro lives alone in an old and cheap house.
01:23When he feels bored at home, he practices blowing a toothpick hard enough to use it like an arrow.
01:27Suddenly, someone silently enters his room.
01:29It is his senior Kato who has come to assign him a mission.
01:32After World War II, a group of rogue ninjas formed a dangerous organization known as the Underground Ninjas.
01:37Based on intelligence reports, they have infiltrated and taken control of Zone High School.
01:42The school is located in a special area where the abandoned Natano military school once stood.
01:46Secrets from the war are believed to still be hidden there.
01:49Kuro's mission is to go undercover and uncover the group's true plans.
01:53To assist him, Kato provides Kuro with a special suit.
01:55This suit allows him to disappear, but only on the surface level.
01:59While testing the suit and trying to kill time, Kuro hears one of his friends calling
02:02out for toilet paper.
02:03The toilet paper is placed far away from the seat.
02:06She warns Kuro that if he looks at her, she will beat him up.
02:09Following her instructions, Kuro climbs along the wall and avoids her gaze.
02:12He carefully reaches the toilet paper.
02:14However, when he turns to hand it to her, he ends up getting slapped in the face.
02:17The next morning, Kuro arrives at Judand High School.
02:20When he learns that he must take an entrance exam, he becomes extremely anxious.
02:24For a moment, he thinks that none of it is worth the trouble.
02:26He decides that he should just complete the mission and leave,
02:29but then the fear of Kato begins to haunt him.
02:31Kuro starts wondering how he can possibly pass the entrance exam.
02:35With his tired yet handsome face, Kuro quickly catches the attention of Noguchi,
02:39a student who is retaking the exam.
02:41After entering the classroom, Kuro keeps his head down, circles the room,
02:44and then sits beside Noguchi.
02:45He is certain that members of the organization have already prepared for his arrival.
02:49They have created an answer key using colorful rice grains scattered across the floor.
02:54As Kuro starts writing his answers, Noguchi suddenly screams.
02:57He believes the rice grains are some kind of insects.
02:59The teacher tells him that if he is bothered, he should clean them up.
03:02Kuro realizes that something must be done.
03:04She drops her eraser, bends down to pick it up, and cleverly loads a paper ball into a straw.
03:09She then shoots it toward Noguchi.
03:10Noguchi screams that someone has just touched her.
03:12She even begins accusing the teacher of being a perverted old man.
03:15The teacher responds calmly, saying that he does not have arms that long.
03:19While the argument continues, Kuro rapidly fills in one answer sheet after another.
03:23Before he can complete the math exam,
03:25the teacher rushes toward Noguchi and kicks the rice grains across the floor.
03:28With no other option left, Kuro starts acting dramatically and urinates on the spot.
03:32He begins crying and claims that he was so nervous about the exam that he drank too much water.
03:37The teacher calms her down and explains that the exam is only a formality.
03:40He assures her that even a blank paper would be enough to pass.
03:43Wanting to learn more about the school, Kuro waits for Noguchi on the way back.
03:47They begin walking home together.
03:48Since Kuro's house comes first, he invites Noguchi to visit for dinner sometime.
03:52Noguchi hesitates, but eventually agrees.
03:54They reach the rooftop of his house and continue talking.
03:57Noguchi mentions that some troublesome students in their class often tease him.
04:00He talks about a friend named Ada.
04:02The teasing became so severe that Ada eventually stopped coming to school.
04:05Noguchi also reveals that there are secret tunnels beneath the school.
04:09These tunnels date back to World War II.
04:10They once connected to a special military base used during the era of ninjas.
04:14Kuro realizes that the underground ninja group may be targeting this hidden base.
04:18As the sun begins to set, Noguchi says that she should head home.
04:21Suddenly, she slips from the rooftop and starts to fall.
04:24Before she can hit the ground, Kuro leaps forward and catches her.
04:27As they fall, the safety system in Kuro's suit activates and turns into a cushion.
04:31Noguchi screams, faints with her mouth wide open, and loses consciousness.
04:35Kuro then takes her safely back home.
04:37That same night, a reckless boy tries to fly a drone near the bathroom of their neighbor,
04:41Kawato.
04:41He does not realize that Kuro is sitting there wearing his invisible suit.
04:45Kuro uses his special electric baton to shock the boy.
04:48It turns out that the boy is Ada, a friend of Noguchi.
04:50Kuro forces him to apologize to Kawato.
04:52The next day, he takes Ada to school.
04:54Kuro assures him that he will protect him.
04:56However, he also warns that Ada will have to pay a fine of 500 rupees every day.
05:00As soon as they reach the school, the boys start harassing Ada again.
05:03This time, however, they have chosen the wrong moment because Kuro is also there.
05:07Kuro hooks Ada's leg with his foot and slams into the other boy.
05:10The boy jumps in pain and stumbles back.
05:12Ada has no idea what just happened.
05:14Kuro calmly walks away and takes a seat in the back row.
05:17He realizes that he has forgotten his book.
05:19Sato, the girl sitting beside him, offers him hers.
05:21Noguchi watches the scene with clear envy.
05:23Suddenly, a red laser light appears on Kuro's face.
05:26This laser is actually a secret signal used by ninjas to communicate.
05:30Kuro immediately stands up and leaves the classroom.
05:32On the rooftop, he meets a boy named Shion.
05:34Shion is a high-ranking ninja.
05:36He was also present on the day Kuro dealt with the Russian man.
05:39Before Shion could step into that fight, Kuro had already intervened.
05:42Like Ada, Shion is an undercover ninja at the school.
05:44His mission is to identify members of the underground ninja group.
05:48There is also another ninja living in disguise at the school.
05:50He is currently serving as the discipline director.
05:53The director tells Kuro to meet him in the boiler room after class and then disappears.
05:57Soon after, Kuro notices that Ada is being bullied again.
05:59Kuro activates his ability and vanishes from sight.
06:02He reappears wearing a box over his head.
06:04One of the boys kicks him to see who he is, but instead falls to the ground.
06:07Kuro first sets a trap and then moves behind Ada.
06:10He grabs Ada's arm and uses it to deliver a powerful punch to the other boy.
06:14This ensures that the credit goes to Ada, not to Kuro.
06:16Later, Kuro goes to the boiler room to meet the discipline director.
06:19Without warning, the director pulls out a sword and attacks him.
06:22Both of them mistakenly believe the other is part of the underground ninja group.
06:25Kuro counters every strike with precise and powerful moves.
06:28When he realizes that the director is not affiliated with the group, he warns him to stop.
06:33He claims that a satellite is locked onto the director and that he could end the fight instantly.
06:37The director laughs and thinks Kuro is bluffing.
06:39He believes a low-ranking ninja could never control a satellite.
06:42At that moment, a laser fires from the sky and slices the director's sword in half.
06:46The director immediately understands the situation and backs off.
06:49Kuro then leaves the room.
06:50As he steps outside, he notices Mitsuki, the most popular girl in his class, waiting for him.
06:54She gives him a strange smile and walks away without saying a word.
06:58At a nearby store, the sensor door opens and closes, even though no one is visible.
07:01It appears as if something invisible has entered the shop.
07:04Moments later, items begin falling from the shelves.
07:07The woman inside tries to fight back.
07:08She is also a ninja.
07:09However, the invisible man kills her.
07:11Suzuki receives a message informing her that her mentor, a fellow ninja, has been murdered.
07:16Soon after, Suzuki herself is attacked.
07:18She realizes that the attacker must be from the underground ninja group.
07:22Only they possess a suit that allows complete invisibility.
07:25Her own suit can only make her partially vanish.
07:28Later, as Sato is walking home from school, the same man grabs her.
07:31Suzuki warns him not to harm civilians.
07:34The man coldly replies that Suzuki's death is not written there.
07:37He says it is written at Kodan High School.
07:39Meanwhile, Noguchi sits alone in her room, lost in thoughts about Kuro.
07:43For the past few days, she has been unable to get him out of her mind.
07:46She keeps dreaming of a happy life with him.
07:48One night, she suddenly sees Kuro sitting beside her bed, silently staring at her.
07:52Kuro tells her that a ninja working at a store has been killed.
07:55He warns her that an underground ninja group may be planning an attack.
07:59A violent clash is about to break out at their school.
08:01Kuro tells Noguchi not to come to school for the next few days.
08:04Without saying anything more, he jumps out of the window and disappears.
08:07The scene then shifts to a man running as if he is being hunted.
08:10Suddenly, a ninja star chases him through the air.
08:12At the first opening, it pierces his leg and he collapses to the ground.
08:16The man's name is Saruta. He was once a ninja from Kuro's team, known as Nin,
08:20but he has since left the group. The invisible figure pursuing him offers him a choice.
08:24He asks Saruta if he wants to join the underground ninjas.
08:27Saruta immediately agrees, saying that he enjoys killing people.
08:29He demands to know who the next target is.
08:32It is then revealed that the invisible ninja responsible for killing other ninjas is Saruta himself.
08:37The next morning, as a student heads to school, Saruta decapitates him with a single strike.
08:42He takes the body with him and disappears.
08:43Despite Kuro's warning, Noguchi goes to school to look for him.
08:46At the entrance, the school director notices her.
08:48Noguchi desperately explains everything Kuro told her about the school being destroyed.
08:52The director realizes that a battle is about to erupt.
08:55He hands Noguchi a ring and asks her to give it to Kuro.
08:57He urges her to find him, saying that the matter is extremely important.
09:01Shortly after, Saruta arrives inside a classroom with the student's body.
09:05Still unseen, the headless corpse suddenly drops in front of everyone.
09:08The classroom erupts into chaos. Saruta begins killing students one by one.
09:12Some manage to escape, but Saruta continues chasing them.
09:15Soon, Suzuki and Shion receive news that an underground ninja is attacking the school.
09:19Suzuki arrives and witnesses the massacre with her own eyes.
09:22She draws her wand and prepares to fight.
09:24The assassin removes his invisibility suit and takes off his mask.
09:27Suzuki recognizes him. Saruta coldly asks if she remembers him.
09:30He reminds her that when they studied at this school, he loved her deeply.
09:33He accuses her of mocking his feelings and running away.
09:36Consumed by anger and hatred, Saruta shows no mercy.
09:38The two clash in a brutal fight. Suzuki gains the upper hand and moves close to victory.
09:42However, she fails to realize that Saruta's suit can absorb lightning attacks.
09:46Because of this, her wand has no effect on him.
09:48Just as Suzuki is about to be defeated, a man crashes through the glass.
09:52It is the same high-ranking ninja. Saruta immediately understands the situation.
09:56Facing him, Saruta knows he stands almost no chance.
09:58That is why he puts on his mask and quietly disappears.
10:01However, Kaido has no trouble dealing with this.
10:03He slashes his own arm at lightning speed and throws his blood toward Saruta.
10:07The bloodstains Saruta's suit and reveals his invisible body.
10:10Kaido immediately attacks Saruta with his sword.
10:12Saruta's advanced suit suddenly inflates like a balloon and blocks the strike.
10:16Taking advantage of the moment, Saruta manages to escape.
10:19Meanwhile, Noguchi continues searching for Kuro.
10:21She suddenly runs into a panicked Iida.
10:23Iida tells her that he, Kuro, and another boy went into the tunnel area.
10:27There is a rumor that a hidden passage leads to an underground bunker.
10:30Iida explains that he and the other boy were too afraid to go inside.
10:33Now he is worried that Kuro may be in danger.
10:35At the same time, Kuro encounters a girl inside the tunnels.
10:38She is Mitsuki, the one who planned everything from the beginning.
10:41Mitsuki is far more powerful than Kuro ever imagined.
10:44Kuro throws a bomb at her in an attempt to stop her.
10:46Moments later, she is seen hanging from the wall by a single finger.
10:50Kuro then throws two high-voltage cables at her.
10:52She catches them with her bare hands as if electricity has no effect on her.
10:55Elsewhere in the school, Saruta continues wandering through the corridors.
10:59Suddenly, Shion appears in front of him.
11:01Shion draws his sword and begins confronting Saruta with incredible speed and skill.
11:05He cleverly scatters broken glass across the floor.
11:07This allows him to track Saruta's movements by sound.
11:10Even his teddy bear helps pinpoint Saruta's exact location.
11:13Shion manages to pin Saruta against a wall.
11:15Saruta would have been killed by a satellite strike within seconds.
11:18However, he escapes at the very last moment.
11:21Shion chases Saruta and catches up with him on the rooftop.
11:23He delivers a powerful sword strike, but only Saruta's empty suit remains behind.
11:27Saruta suddenly attacks Shion from behind.
11:30Shion tries to evade the surprise assault, but his sword snaps in half.
11:33Although Shion is the more skilled fighter, the underground ninjas possess superior weapons.
11:38During the struggle, Shion suffers a critical wound to his shoulder.
11:41Wounded and terrified, he can only defend himself with half of his broken sword.
11:44He is on the verge of defeat.
11:46At that moment, Kaido arrives and turns the situation around.
11:49He drives his sword straight through Saruta's body.
11:51Saruta's rampage finally comes to an end.
11:53Kaido saves Shion's life.
11:54Deep inside the tunnels, Kuro is losing his fight.
11:57He realizes that defeating Mitsuki is nearly impossible due to her overwhelming power.
12:01Still, Kuro wants to understand her true motive.
12:04He asks why she is doing all of this.
12:05Mitsuki finally reveals the truth.
12:07She deliberately spread false information to lure all the ninjas to the school.
12:11This allowed them to activate the laser satellite and locate its position.
12:14By hacking the data, they managed to pinpoint the satellite.
12:17Now one of their allies has already reached it.
12:19One of their special suits is even capable of functioning in space.
12:22As Mitsuki launches another deadly attack, Kuro struggles to defend himself.
12:26He barely withstands her immense strength.
12:28In reality, he is only buying time.
12:30He is waiting for his friends to arrive and save him.
12:33Just then, Noguchi arrives with Iida.
12:35Noguchi gives Kuro the ring that the discipline director told her to deliver.
12:38Kuro activates the ring and extends its antenna.
12:41At that moment, a drone arrives, carrying a sword.
12:43Kuro grabs the sword, kicks Mitsuki into a cloud of dust, and looks for an opening.
12:47Soon, the two face each other in a fierce confrontation.
12:50Kuro quickly realizes that attacking Mitsuki head-on is a mistake.
12:53He understands that he must dodge and strike suddenly.
12:55His vanishing suit proves useless because it only hides his upper body.
12:59Even after activating it, Mitsuki can still see him clearly.
13:02Kuro keeps questioning how long he can survive fighting like this.
13:05Each attempt ends with him being overpowered.
13:07In the end, he accepts that he cannot win through normal means.
13:10Kuro realizes there is only one way to defeat Mitsuki.
13:13He launches a direct assault using a powerful technique.
13:16Putting his own life at risk, he charges forward without hesitation.
13:19Kuro's sword pierces straight through Mitsuki.
13:21At the same time, Mitsuki's blade strikes Kuro.
13:24Kuro forces Mitsuki back, and she pulls the sword out.
13:26Mitsuki collapses to the ground.
13:28Kuro has reached his physical limit.
13:30Badly injured, he stumbles and falls.
13:31Noguchi rushes to him, lifts him up, and helps him escape.
13:34Meanwhile, a member of the underground ninja group infiltrates the satellite.
13:37He uploads a virus into the system and takes control of the laser network.
13:41With a single turn of the dial, the power is raised to maximum.
13:44The laser locks onto the school as its target.
13:46After expanding its output, the laser completely destroys the school.
13:49The massive explosion sends violent tremors through the underground bunker.
13:53The bunker begins to collapse, and the exit is far away.
13:56Noguchi and Kuro try to escape, but Kuro is critically injured.
13:58Fearing that he will not survive, Kuro removes his vanishing suit.
14:01He places it over Noguchi to protect her.
14:03Debris begins crashing down all around them.
14:05After some time, Noguchi emerges alone.
14:07She realizes that the special suit saved her life.
14:10Kuro sacrificed himself to save her and protect the world.
14:13However, at the end of the film, a final twist is revealed.
14:16Kuro's twin brother, Juro, appears for unknown reasons.
14:18He comes to meet Noguchi, leaving the story on a mysterious note.
14:21If you enjoyed the video, please like it and subscribe to the channel.
14:24See you in the next video.
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