1 season available

Buso Renkin

TV14 • Drama, Anime, Fantasy, Adventure, Animation, International, Action • TV Series • 2006

High school student Kazuki Muto thinks he's saving a girl from a monster, but it turns out that he's the one who needs saving! Kazuki is killed while ...more

High school student Kazuki Muto thinks he's saving a girl from a monster, but it turns out that he's the one who needs saving! Kazuki is killed while ...more

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1 season available (52 episodes)

1 season available

(52 episodes)

Season1
Episode 1

(Sub) A New Life

In an abandoned factory at night, Kazuki Muto dies in an attempt to save a girl from a monster. Or does he? Kazuki wakes up the next morning as if nothing happened. But after school, when his teacher transforms into that same monster, Tokiko, the girl he tried to save the previous night, appears and tells him that the monster is a homunculus and that he did in fact die the night before! But Tokiko replaced his heart with an alchemical alloy called a kakugane that can transform into a weapon of immense power called a Buso Renkin. Now, Kazuki is about to find himself mixed up in a supernatural battle!
Episode 1

(Dub) A New Life

In an abandoned factory at night, Kazuki Muto dies in an attempt to save a girl from a monster. Or does he? Kazuki wakes up the next morning as if nothing happened.
Episode 2

(Dub) The True Form Homunculus

Tokiko and Kazuki visit the haunted factory where everything began. There, they find the remains of victims and a homunculus incubator.
Episode 2

(Sub) The True Form Homunculus

Tokiko and Kazuki visit the haunted factory where everything began. There, they find the remains of victims and a homunculus incubator. The homunculi made there lodge themselves onto humans and consume them, creating monsters like the one that attacked Kazuki. But who is doing this, and why? Before they can begin their search, Kazuki and Tokiko are attacked from above by a homunculus with giant eagle wings carrying a man in a school uniform on his back.
Episode 3

(Dub) You’ve Become a Little Stronger

A homunculus embryo has lodged itself on Tokiko, and a week remains before she becomes a homunculus.
Episode 3

(Sub) You’ve Become a Little Stronger

A homunculus embryo has lodged itself on Tokiko, and a week remains before she becomes a homunculus. Between bouts of training with his lance, Kazuki and Tokiko search for the creator of homunculus in order to obtain the antidote. Meanwhile, the Papillon Masked Creator orders his subordinate homunculus Kawazui to find the lance-wielding boy. Kawazui’s desire for revenge makes Kazuki hold even tighter to his personal vow: to use the kakugane Tokiko gave him not for himself but to protect others. His first one-on-one battle with a homunculus begins!
Episode 4

(Sub) Another New Life

Kazuki and Tokiko search for a student who has been absent from school for the past four days and come across a sickly third-year student who turns out to be the creator of the homunculi, Koshaku Chono. Chono explains that he has an incurable illness and used his ancestor’s research on alchemy to gain the technology to produce homunculi and eventually reach his goal of attaining an immortal body by becoming a humanoid homunculus. Tokiko is outraged that Chono is willing to sacrifice other lives in order to defy his own death and tries to destroy the core homunculus made from Chono’s own cells.
Episode 4

(Dub) Another New Life

Kazuki and Tokiko search for a student who has been absent from school for the past four days and come across a sickly third-year student who turns out to be the creator of the homunculi…
Episode 5

(Sub) To Protect Someone

Evading the homunculus Washio’s attack, Kazuki and Tokiko fall back to form a plan. The two devise a series of high-speed attacks, but Washio’s natural instinct and warrior experience sees through their plan. He slashes Tokiko, and Kazuki succeeds in delivering a single blow to Washio. But Tokiko is heavily wounded, and worse, the lodged homunculus has progressed up to her spinal cord. Kazuki fights on, and Washio feels a stubborn strength growing within the boy.
Episode 5

(Dub) To Protect Someone

Evading the homunculus Washio’s attack, Kazuki and Tokiko fall back to form a plan.
Episode 6

(Dub) The Butterfly of Black Death

Seeking the antidote, Kazuki goes to Chono’s house, where Chono’s father tells him he has cut ties with his son.
Episode 6

(Sub) The Butterfly of Black Death

Seeking the antidote, Kazuki goes to Chono’s house, where Chono’s father tells him he has cut ties with his son. Kazuki heads to the warehouse behind the Chono household, the very place where his ancestor conducted his alchemy research, where Chono is waiting alone for the core homunculus to hatch. Chono welcomes Kazuki and says he will give him the antidote but will not hand over the homunculus, his only chance for survival. Kazuki advises Chono that whether he’s human or homunculus, he will die alone, though Chono doesn’t seem to care.
Episode 7

(Sub) Whether or Not You’re a Hypocrite

Captain Bravo of the Alchemist Army recruits Kazuki to be Alchemist Warrior. Anticipating underground enemy activities within Ginsei City, Tokiko transfers to Kazuki’s class, and Bravo becomes the manager of the school dormitory. Bravo informs Kazuki and Tokiko of their mission to search out and destroy the League of Extraordinary Elect (LXE) led by Dr. Butterfly, an organization that has joined forces with a traitor from the Alchemist Warriors.
Episode 7

(Dub) Whether or Not You’re a Hypocrite

Captain Bravo of the Alchemist Army recruits Kazuki to be Alchemist Warrior. Anticipating underground enemy activities within Ginsei City, Tokiko transfers to Kazuki’s class, and Bravo becomes the manager of the school dormitory.
Episode 8

(Sub) A Night in the Dorm

Bravo begins training Kazuki to harden him into an Alchemist Warrior. Meanwhile, Tokiko is ordered to safeguard the kakugane originally taken from Bravo’s subordinate Alchemist Warrior. That very night, their enemy Jinnai uses his Buso Renkin, Noisy Hamelin, to control the students in the dormitory and force them to attack Tokiko and reclaim the kakugane. To evade the danger in front of her without harming the students, Tokiko must find and kill Jinnai!
Episode 8

(Dub) A Night in the Dorm

Bravo begins training Kazuki to harden him into an Alchemist Warrior. Meanwhile, Tokiko is ordered to safeguard the kakugane originally taken from Bravo’s subordinate Alchemist Warrior.
Episode 9

(Sub) The Hayasaka Twins

One rainy afternoon, Kazuki comes across two third-year students, school class president Ouka Hayasaka and her younger twin brother and star player of the Kendo Club, Shusui. Kazuki connects with Shusui’s desire to become as strong as possible, and he helps out with Shusui’s practice. Acknowledging each other’s skills, Kazuki and Shusui quickly become friends. But the Hayasaka twins are in fact followers of the LXE, under orders to search out and kill the Alchemist Warriors hiding within Ginsei High.
Episode 9

(Dub) The Hayasaka Twins

One rainy afternoon, Kazuki comes across two third-year students, school class president Ouka Hayasaka and her younger twin brother and star player of the Kendo Club, Shusui.
Episode 10

(Sub) It Seems We’re Well Matched

Both Kazuki and the Hayasaka twins cannot hide their shock at learning each other’s identities as Alchemist Warrior and LXE. But the Hayasaka twins are determined to fight. Kazuki proposes to battle Shusui one on one until Ouka returns from shutting down the school security system. Shusui hands Kazuki the first strike, but he deflects it with his kakugane. Activating his own kakugane, Shusui produces his Buso Renkin, Sword Samurai X, which has the property of absorbing any energy that it comes into contact with.
Episode 10

(Dub) It Seems We’re Well Matched

Both Kazuki and the Hayasaka twins cannot hide their shock at learning each other’s identities as Alchemist Warrior and LXE.
Episode 11

(Sub) ’Til Death Do Us Part

Shusui recalls his earliest memories: being abducted by a woman claiming to be his mother and the days he spent in confinement. The twins grew up never questioning the closed world they lived in. Eventually, their “mother” died and the twins were rescued from near starvation and taken in by Dr. Butterfly. Since then, both sister and brother have only wished to live together for eternity as a homunculus. When Tokiko tries to kill off the twins, Kazuki pleads for their lives because they are still human.
Episode 11

(Dub) ’Til Death Do Us Part

Shusui recalls his earliest memories: being abducted by a woman claiming to be his mother and the days he spent in confinement. The twins grew up never questioning the closed world they lived in.
Episode 12

(Sub) Carnival

In the forest outside of Ginsei City, Bravo, Kazuki, and Tokiko decide to infiltrate the LXE hideout and take down the LXE before they can revive the Warrior Traitor, but they find the place empty except for Moonface, who explains that Dr. Butterfly has left for Ginsei High to use the school’s students as sacrifices to revive the Warrior Traitor. Bravo stays behind to deal with Moonface, and Kazuki and Tokiko rush back to school, only to have their path blocked by a mysterious fog. With the fog-covered school isolated from the outside world, hordes of humanoid homunculi prepare to attack the students.
Episode 12

(Dub) Carnival

In the forest outside of Ginsei City, Bravo, Kazuki, and Tokiko decide to infiltrate the LXE hideout and take down the LXE before they can revive the Warrior Traitor, but they find the place empty except for Moonface…
Episode 13

(Sub) Signs of Death

Bravo rages in a seemingly never-ending battle against Moonface, while Tokiko cannot help but question and fear the intense power Kazuki is displaying as he destroys the hordes of homunculi while his friends cheer him on. Then a kakugane-equipped Papillon enters the scene and begins a battle against Dr. Butterfly. Butterfly attempts to break down Papillon’s mind by making him remember his lonesome and fragile past as a human, but Papillon cuts his way through with Near-Death Happiness. Amidst all the chaos, the Warrior Traitor finally awakens.
Episode 13

(Dub) Signs of Death

Bravo rages in a seemingly never-ending battle against Moonface, while Tokiko cannot help but question and fear the intense power Kazuki is displaying as he destroys the hordes of homunculi while his friends cheer him on.
Episode 14

(Dub) Who Are You?

Stopping the Warrior Traitor is the only means to save his friends. Kazuki heads to the rooftop and with full force destroys the Restoration Flask, but finds the shattered flask to be empty!
Episode 14

(Sub) Who Are You?

Stopping the Warrior Traitor is the only means to save his friends. Kazuki heads to the rooftop and with full force destroys the Restoration Flask, but finds the shattered flask to be empty! While in midair the Warrior Traitor seizes Kazuki’s lance with his bare hands. Awakened from his century-old slumber, he is Victor, said by Butterfly to be a third type of being that surpasses both humans and homunculi. Recognizing Kazuki’s attack as the Buso Renkin of an Alchemist Warrior, Victor expresses his raging hatred, and his black kakugane Buso Renkin shatters Kazuki’s Sunlight Heart to pieces.
Episode 15

(Dub) An Intermediate Existence

Becoming like Victor, Kazuki is driven by his fighting instinct. Victor leaves the scene, promising to return. Kazuki tries to follow, but thanks to Tokiko’s sorrowful cry, he regains his consciousness.
Episode 15

(Sub) An Intermediate Existence

Becoming like Victor, Kazuki is driven by his fighting instinct. Victor leaves the scene, promising to return. Kazuki tries to follow, but thanks to Tokiko’s sorrowful cry, he regains his consciousness. Papillon theorizes that Kazuki transformed due to his becoming a medium between Victor and humans. Bravo returns to HQ in order to learn more about Victor, Kazuki’s transformation, and the black kakugane, as well as to figure out what really happened a hundred years ago.
Episode 16

(Dub) New Strength

Kazuki and the gang are enjoying the summer, except for Tokiko, who sneaks off to meet with Gota Nakamura, the newly appointed Alchemist Warrior, who informs her of their new mission.
Episode 16

(Sub) New Strength

Kazuki and the gang are enjoying the summer, except for Tokiko, who sneaks off to meet with Gota Nakamura, the newly appointed Alchemist Warrior, who informs her of their new mission. At the same time, Kazuki meets up with Bravo for further training but instead is told the surprising truth: In the past, the Alchemist Warrior Victor was a test subject for the Alchemist Army’s breakthrough, the black kakugane. However, the result was the creation of a monster more powerful than a homunculus. And like Victor, with the black kakugane embedded in his chest, Kazuki will, in six weeks, become a cursed monster whose mere existence will spread death.
Episode 17

(Sub) When Dawn Comes

Thanks to the power of the black kakugane, Kazuki is revived. In order to deal with the black kakugane, Kazuki decides to go to the place where Tokiko found it. Tokiko tells Kazuki that she will not leave his side. Gota, who has harbored feelings toward Tokiko since their days in training, is stricken with grief. As Gota wanders alone, he comes across Warrior Chief Hiwatari and his team who are there to confirm Kazuki’s death and retrieve the black kakugane. Upon learning of Kazuki’s survival, Hiwatari declares Tokiko’s action a betrayal of the Alchemist Army.
Episode 17

(Dub) When Dawn Comes

Thanks to the power of the black kakugane, Kazuki is revived. In order to deal with the black kakugane, Kazuki decides to go to the place where Tokiko found it. Tokiko tells Kazuki that she will not leave his side.
Episode 18

(Dub) The Escape

Kazuki, Tokiko, and Gota head toward the Newton Apple Academy for Girls, an all-girl boarding school where the black kakugane was originally located.
Episode 18

(Sub) The Escape

Kazuki, Tokiko, and Gota head toward the Newton Apple Academy for Girls, an all-girl boarding school where the black kakugane was originally located. Warrior Chief Hiwatari and his re-extermination squad are pursuing Kazuki but are stopped by Papillon. Warrior Ikusabe, stays behind to fight off Papillon. Papillon attacks with his Near-Death Happiness, but no matter how much damage Ikusabe’s body takes, his Buso Renkin allows him to instantaneously regenerate. Against an enemy with restoration ability far superior to that of a homunculus, does Papillon stand a chance?
Episode 19

(Sub) As Long As I Can Protect You

Caught in the explosion created by Hiwatari, Tokiko and Gota stray from Kazuki. Meanwhile, the search and destroy team locates Victor and launches a full-scale attack. But the ability of Victor’s Buso Renkin to control gravity proves too powerful. Thanks to Shusui’s Sword Samurai X and Chitose’s Hermes drive, the team narrowly escapes imminent doom and is forced to retreat. As Kazuki searches for Tokiko and Gota, a shadowy figure appears. The man determined to make the kill is none other than Captain Bravo. With no words exchanged, the final showdown nears.
Episode 19

(Dub) As Long As I Can Protect You

Caught in the explosion created by Hiwatari, Tokiko and Gota stray from Kazuki. Meanwhile, the search and destroy team locates Victor and launches a full-scale attack.
Episode 20

(Sub) With Strength and Feeling

Without speaking a word, Kazuki and Bravo battle to settle the score. Kazuki attacks with his lance, but even that is not enough to penetrate Bravo’s Silver Skin. Bravo accepts Kazuki’s growth as a warrior and reinforces his will to re-exterminate Kazuki. Using Silver Skin Reverse to restrain Kazuki, Bravo instead catches Gota who, along with Tokiko, has come for Kazuki. By placing himself between the Silver Skin and the target, Gota breaches the Reverse attack, and Tokiko pleads with Bravo to give them time to find a way to nullify the black kakugane.
Episode 20

(Dub) With Strength and Feeling

Without speaking a word, Kazuki and Bravo battle to settle the score. Kazuki attacks with his lance, but even that is not enough to penetrate Bravo’s Silver Skin.
Episode 21

(Sub) Gone Into Flame

Hiwatari’s Buso Renkin, Blaze of Glory, engulfs everyone but the Silver Skin-equipped Bravo…or so it seems. To Hiwatari’s surprise, inside the two Silver Skins were Kazuki, Tokiko, and Gota. Before being engulfed by the flames, Bravo sacrificed himself in order to save them. Kazuki and Hiwatari clash, but a tattered Silver Skin stands before them. Is Bravo still alive? Then the Alchemist Army’s Great Warrior Chief Shosei Sakaguchi orders Hiwatari to suspend Kazuki’s re-extermination and join him for the final battle against Victor.
Episode 21

(Dub) Gone Into Flame

Hiwatari’s Buso Renkin, Blaze of Glory, engulfs everyone but the Silver Skin-equipped Bravo…or so it seems. To Hiwatari’s surprise, inside the two Silver Skins were Kazuki, Tokiko, and Gota.
Episode 22

(Sub) A Decision Is Required

The Alchemist Army delivers a full-scale attack against Victor. But in the midst of the attack, Victor’s evolution reaches its final stage, increasing his powers to unimaginable levels. Meanwhile Kazuki, Tokiko, and Gota meet up with Papillon and Gozen at Newton Apple Academy for Girls. To everyone’s astonishment, Victor’s wife Alexandria and their daughter Victoria greet the group. The two explain that for the past hundred years, they have been researching a way to reverse the effects of the black kakugane, which has turned Victor into a monster.
Episode 22

(Dub) A Decision Is Required

The Alchemist Army delivers a full-scale attack against Victor. But in the midst of the attack, Victor’s evolution reaches its final stage, increasing his powers to unimaginable levels.
Episode 23

(Dub) Boy Meets Battle Girl

With only moments until the completion of the white kakugane, which can revert a Victornized being into a human once more, Kazuki is faced with the ultimate choice of whether to use the cure on himself or Victor.
Episode 23

(Sub) Boy Meets Battle Girl

With only moments until the completion of the white kakugane, which can revert a Victornized being into a human once more, Kazuki is faced with the ultimate choice of whether to use the cure on himself or Victor. Still unsure, Kazuki and Tokiko return to their friends in Ginsei City, where they celebrate summer break by going to an amusement park. When thinking of the smiling faces of his friends, Kazuki already knows what his decision is.
Episode 24

(Dub) When You Die, I’ll Die With You

Kazuki has decided to use the perfected white kakugane on Victor. By placing himself in suspended animation, Kazuki can put an end to being further Victornized by waiting until another white kakugane can be perfected by Papillon.
Episode 24

(Sub) When You Die, I’ll Die With You

Kazuki has decided to use the perfected white kakugane on Victor. By placing himself in suspended animation, Kazuki can put an end to being further Victornized by waiting until another white kakugane can be perfected by Papillon. Though a temporary measure, it means saying goodbye to Tokiko and friends. Soon Kazuki heads to the battlefield where the Alchemist Army is fighting Victor, where he and Tokiko impale Victor’s body with the white kakugane. But Victor does not revert back to his human form!
Episode 25

(Sub) No One Could Ever Take His Place

Following Kazuki and Victor’s disappearance into the heavens, peace returns, and time passes. Everyone who knew Kazuki feels his loss. Unable to accept reality, Tokiko spends her days in idleness. Soon, after thinking through what she could do for Kazuki, Tokiko comes to the conclusion to challenge Papillon to carry out the promise Kazuki made with him.
Episode 25

(Dub) No One Could Ever Take His Place

Following Kazuki and Victor’s disappearance into the heavens, peace returns, and time passes. Everyone who knew Kazuki feels his loss. Unable to accept reality, Tokiko spends her days in idleness.
Episode 26

(Sub) Period

Papillon shows Tokiko the new white kakugane he has forged for the sole purpose of reverting Kazuki back to a human being. Then, from the moon above a golden burst of light shines through the night sky. It is the shining of Kazuki’s Sunlight Heart! Convinced of Kazuki’s survival, the Alchemist Army takes Tokiko on the Buster Baron toward the moon. Kazuki and Victor have continued their battle over the past month. Victor halts the battle when he senses the approach of the Buster Baron, and a being covered in the Silver Skin flies out into open space. The being is Tokiko, who has come to rescue Kazuki.
Episode 26

(Dub) Period

Papillon shows Tokiko the new white kakugane he has forged for the sole purpose of reverting Kazuki back to a human being.

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