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The Best Episodes of Buso Renkin

Every episode of Buso Renkin ranked from best to worst. Let's dive into the Best Episodes of Buso Renkin!

Binge this in 10h 24m•Peaking at 7.7/10

The story begins when high school student Kazuki Muto is killed one night saving a mysterious girl from a monster, only to wake up in his school dorm, believing it to have been a dream;

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  1. #1 Fan Favorite
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    Buso Renkin Season 1 Episode 13 - Signs of Death
    7.7/10(9 votes)

    #1 - Signs of Death

    S1:E13

    After defeating the Homunculi, the flask Dr. Butterfly has with him activates and begins to drain energy from everyone inside the school. Papillon appears with his own buso renkin activated and challenges Dr. Butterfly to a battle, eventually coming out victorious.

    Director:Tsuyoshi Yoshimoto
    Writer:Unknown

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  2. Buso Renkin Season 1 Episode 5 - To Protect Someone
    7.5/10(9 votes)

    #2 - To Protect Someone

    S1:E5

    Kazuki and Tokiko retreat to form a plan on how to defeat the eagle Homunculus but not all goes as planned when Tokiko receives possibly critical injuries. Hurt but not out for the count the eagle Homunculus plans to target Tokiko, but Kazuki won't hear of it and they face off in an exciting and explosive duel. Kazuki learns the reason behind this Homunculus's awesome strength is quite similar to the source of his own will to fight. When the battle turns against him and all seems lost Kazuki decides to go for broke and unleash a powerful but dangerous attack.

    Director:Unknown
    Writer:Unknown

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  3. Buso Renkin Season 1 Episode 12 - Carnival
    7.5/10(9 votes)

    #3 - Carnival

    S1:E12

    Kazuki, Tokiko, and Bravo infiltrate the LXE's base only to find out Dr. Butterfly and his army of Homunculi are targeting Kazuki's school. While Bravo engages in battle with the Homunculus in the base called Moonface, Kazuki and Tokiko defends the school from Dr. Butterfly and his army.

    Director:Tsuyoshi Nagasawa
    Writer:Unknown

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  4. Buso Renkin Season 1 Episode 14 - Who Are You?
    7.5/10(9 votes)

    #4 - Who Are You?

    S1:E14

    Before Dr. Butterfly dies, he explains that a man named Victor is inside the flask and that he is a being far superior to humans and Homunculi. Kazuki destroys the flask and engages Victor in battle and is seemingly killed after having his kakugane destroyed. Kazuki regains his kakugane which is revealed to be a black kakugane, causing him to transform into a being like Victor with glowing light green hair, red eyes, and tanned skin.

    Director:Unknown
    Writer:Unknown

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  5. Buso Renkin Season 1 Episode 2 - The True Form Homunculus
    7.4/10(12 votes)

    #5 - The True Form Homunculus

    S1:E2

    As Kazuki begins to learn more about his enemy and the source of his power he decides to assist Tokito in the eradication of the Homonculi in his town. As Tokito begins investigating the “haunted factory” of the Homonculi she discovers a very disturbing thing, apparently the Homonculi have been developing a new weapon, a parasite that turns people into man eating monsters.

    Director:Unknown
    Writer:Unknown

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  6. Buso Renkin Season 1 Episode 9 - The Hayasaka Twins
    7.4/10(9 votes)

    #6 - The Hayasaka Twins

    S1:E9

    Kazuki and Tokiko befriend the Hayasaka twins, Shusui and Ouka. However, the twins are actually humans working with the LXE ordered to kill the Alchemist warriors at the school. When two LXE Homunculi invade the school, Kazuki and Tokiko intercept the threats, causing the twins to realize who the Alchemist Warriors are and that they must kill their friends.

    Director:Unknown
    Writer:Unknown

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    The 20 WORST Episodes of Buso Renkin

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  7. Buso Renkin Season 1 Episode 10 - It Seems We're Well Matched
    7.4/10(9 votes)

    #7 - It Seems We're Well Matched

    S1:E10

    The four begin to battle and Kazuki eventually inflicts a fatal wound on Shusui. Ouka uses her buso renkin and heals Shusui while at the same time receiving Shusui's wound on her own body. Due to this, Kazuki realizes they are both humans and not Homunculi and questions whether they are the enemy or not. Shusui reveals that they worked under the LXE so that one day the two can become Homunculi and live together for eternity.

    Director:Unknown
    Writer:Unknown

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  8. Buso Renkin Season 1 Episode 4 - Another New Life
    7.3/10(9 votes)

    #8 - Another New Life

    S1:E4

    After searching hard for the Papillion Mask, they finally found him–although he was definitely not what they were expecting. He supposedly wanted to bargain with Kazuki: the antidote to the Homunculus attached to Tokiko’s body for his Busou Renkin, but Kazuki refused. With a single Kazuki punch, The Papillon Mask was knocked out and brought to be questioned. (The “antidote” was a fake.

    Director:Unknown
    Writer:Unknown

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  9. Buso Renkin Season 1 Episode 15 - An Intermediate Existence
    7.3/10(9 votes)

    #9 - An Intermediate Existence

    S1:E15

    After a short battle, Victor concludes that it would take too much time to defeat Kazuki and leaves the school. After reuniting with Captain Bravo, Papillon leaves to research Victor in order to turn Kazuki back into a human being. The next day, they decide to head to the beach where Tokiko runs into Gouta Nakamura. He tells Tokiko to meet with him at night for important information.

    Director:Unknown
    Writer:Unknown

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  10. Buso Renkin Season 1 Episode 18 - The Escape
    7.3/10(8 votes)

    #10 - The Escape

    S1:E18

    Tokiko explains that a mysterious person gave her Kazuki's kakugane and that person may know how to reverse the black kakugane's effect. Meanwhile, Papillon intercepts the team searching for Kazuki and engages one of its members, Genji Ikusabe in battle. Elsewhere, Shusui is recruited by the Alchemist Warriors for the upcoming battle against Victor. Kazuki's group is ambushed by the team at a graveyard.

    Director:Unknown
    Writer:Unknown

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  11. Buso Renkin Season 1 Episode 19 - As Long as I Can Protect You
    7.3/10(8 votes)

    #11 - As Long as I Can Protect You

    S1:E19

    Hiwatari's buso renkin separates Kazuki from Tokiko and Gouta. Papillon manages to defeat Ikusabe and learns about Kazuki's whereabouts from him. Tokiko and Gouta are able to defeat the enemy, Shinobu Negoro, and resume searching for Kazuki. Elsewhere, the other group of Alchemist Warriors finds Victor and engages him in battle, only to be easily beaten, though Shusui's abilities save them from certain death.

    Director:Unknown
    Writer:Unknown

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  12. Buso Renkin Season 1 Episode 6 - The Butterfly of Black Death
    7.2/10(9 votes)

    #12 - The Butterfly of Black Death

    S1:E6

    Kazuki finds Koushaku in his great-great grandfather's laboratory and attempts to destroy the Homunculus matter. However, due to the interference of Koushaku's younger brother, Koushaku is able to have the Homunculus matter attach to him and is turned into a Homunculus. He then begins to eat everyone in the vicinity until he is killed by Kazuki, who passes out from exhaustion before he is able to deliver the cure to Tokiko. Kazuki awakens to find that Tokiko has been cured and that his buso renkin shall be called Sunlight Heart.

    Director:Unknown
    Writer:Unknown

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  13. Buso Renkin Season 1 Episode 11 - Till Death Do Us Part
    7.2/10(9 votes)

    #13 - Till Death Do Us Part

    S1:E11

    Tokiko proceeds to eliminate the twins but is stopped by Kazuki who argues that they are still human and deserve to live. Shusui inflicts a critical wound on Kazuki while he is distracted. However, Ouka uses her buso renkin and absorbs Kazuki's wound damage claiming that Kazuki is someone they can trust. As Ouka begins to die, Kazuki, Tokiko, and Shusui are able to avert her death with the healing properties of the kakuganes. The next day, Kazuki and Tokiko visit Ouka in the hospital who reveals that her brother had left to train in order to rid himself of LXE's corruption.

    Director:Unknown
    Writer:Unknown

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  14. Buso Renkin Season 1 Episode 26 - Period
    7.2/10(9 votes)

    #14 - Period

    S1:E26

    Tokiko attacks Papillion in an attempt to settle the debt Kazuki made with him. Papillion makes no move until she threatens the large flask behind, which contains something he wishes not to be destroyed. Tokiko, thinking its his weapon to destroy the world, manages to crack the flask open only to reveal a white kakugane, made in one month from scratch. As everyone watches, the moon shines a light like the sun, proving that Muto Kazuki still lives on. Using aid from the General and others, Buster Baron launches into space to retrieve Kazuki. But upon his return, Papillion chooses this time for his duel. What outcome will this duel between Papillion and the now human Kazuki be? What will happen to Victor? The end of Busou Renkin is here.

    Director:Tsuyoshi Nagasawa
    Writer:Unknown

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  15. Buso Renkin Season 1 Episode 7 - Whether or Not You're a Hypocrite
    7.1/10(9 votes)

    #15 - Whether or Not You're a Hypocrite

    S1:E7

    Captain Bravo, a member of the Alchemist Warriors and the one who delivered the cure to Tokiko, offers Kazuki to join their mission on combating against the LXE, a group consisting of Human-type Homunculi based in Kazuki's town. Koushaku, having been resurrected by the LXE's leader who is also his great-great grandfather, Dr. Butterfly, and now calling himself Papillon, seeks Kazuki and declares war on him. Kazuki, Tokiko and Bravo are then attacked by Kinjo, a Homunculus of the LXE, but he is quickly dispatched by Bravo.

    Director:Unknown
    Writer:Unknown

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  16. Buso Renkin Season 1 Episode 23 - Boy Meets Battle Girl
    7.1/10(9 votes)

    #16 - Boy Meets Battle Girl

    S1:E23

    Kazuki and Tokiko spend time with their friends at the amusement park. After much thought, Kazuki decides what he will do with the white kakugane. Meanwhile, the battle between the Alchemist Warriors and Victor continues.

    Director:Unknown
    Writer:Unknown

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  17. Buso Renkin Season 1 Episode 24 - When You Die, I'll Die with You
    7.0/10(9 votes)

    #17 - When You Die, I'll Die with You

    S1:E24

    Kazuki retrieves the white kakugane from Alexandria and proceeds to where the battle between Victor and the Alchemist Warriors is taking place. Using his buso renkin, he forces the white kakugane into Victor; However the white kakugane fails to restore him into a human and merely weakens him. Kazuki then flies to the moon, dragging Victor with him and saves the Earth from Victor's reign.

    Director:Unknown
    Writer:Unknown

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  18. Buso Renkin Season 1 Episode 1 - A New Life
    6.9/10(15 votes)

    #18 - A New Life

    S1:E1

    Ever had a nightmare that felt so real you could have sworn that it wasn’t just a dream? Mutou Kazuki was in that predictament–however! It was not a dream.

    Director:Tsuyoshi Nagasawa
    Writer:Unknown

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  19. Buso Renkin Season 1 Episode 16 - New Strength
    6.9/10(8 votes)

    #19 - New Strength

    S1:E16

    That night, Gouta calls Tokiko out and tells her that Kazuki will be killed. Captain Bravo tells Kazuki that in six weeks, Kazuki will be passively draining energy from those around him like Victor and that Bravo has been ordered to kill Kazuki before the transformation is complete. In a short battle, Bravo handily defeats Kazuki, and leaves him for dead by throwing his inert body into the ocean.

    Director:Unknown
    Writer:Unknown

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  20. Buso Renkin Season 1 Episode 8 - A Night in the Dorm
    6.8/10(9 votes)

    #20 - A Night in the Dorm

    S1:E8

    During the night, Bravo takes Kazuki out to the woods for special training while Tokiko protects the kakugane acquired from the previous battle. Later on, a Homunculus named Jinnai uses a buso renkin and takes control over the students in the dorm, ordering them to take the kakugane from Tokiko. Tokiko is able to avoid her classmates and kill Jinnai, freeing them from his control. Papillon takes the kakugane from the defeated Homunculus, declares that he will defeat Kazuki and then leaves the scene.

    Director:Unknown
    Writer:Unknown

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  21. Buso Renkin Season 1 Episode 25 - No One Could Ever Take His Place
    6.8/10(9 votes)

    #21 - No One Could Ever Take His Place

    S1:E25

    Kazuki had sacrificed himself to save the world and left Tokiko in tears. Life continues–Captain Bravo relays the news of Kazuki to his friends as Tokiko is hospitalized, Chouno is left reminescing in Kazuki’s memory. Tokiko goes through a series of thinking and rethinking (in her own way) and finally comes to a conclusion that the last thing she can do for Kazuki before she leaves is to defeat Chouno in his place. Her friends, Gouta, Hayasaka Oka, Oka’s Busou Renkin: Gozen Angel, and Hayasaka Shuusui goes with her to defeat Papillion/Chouno/butterfly man.

    Director:Unknown
    Writer:Unknown

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  22. Buso Renkin Season 1 Episode 17 - When Dawn Comes
    6.7/10(8 votes)

    #22 - When Dawn Comes

    S1:E17

    Tokiko manages to find Kazuki's body in the ocean and is able to revive him. Meanwhile, Gouta learns that a team led out by Alchemist Warrior Chief Sekima Hiwatari is sent to confirm Kazuki's death. Gouta learns they plan to assassinate Tokiko and impedes their mission before escaping and rendezvousing with Kazuki and Tokiko. The three then prepare to travel to the school where Kazuki's kakugane was found in order to find a way to restore his humanity.

    Director:Unknown
    Writer:Unknown

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  23. Buso Renkin Season 1 Episode 21 - Gone Into Flame
    6.7/10(8 votes)

    #23 - Gone Into Flame

    S1:E21

    Hiwatari engages the four in battle and Bravo is critically wounded in the process. Just before Kazuki and Hiwatari finish each other off, the Alchemist General, Shosei Sakaguchi, stops them explaining Kazuki's assassination has been suspended and that the top priority for the Alchemists is the battle against Victor. Shosei then reinstates Tokiko and Gouta as Alchemy Warriors and allows Kazuki to continue his search for a cure.

    Director:Tsuyoshi Nagasawa
    Writer:Unknown

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  24. Buso Renkin Season 1 Episode 20 - With Strength and Spirit
    6.4/10(8 votes)

    #24 - With Strength and Spirit

    S1:E20

    Kazuki runs into Captain Bravo, engages him in battle but is soon overwhelmed. Despite the information Tokiko is able to relay, Bravo tells him that after he kills Kazuki, he will kill himself to repent for his death. Kazuki, enraged that his failure will result in Bravo's death, pierces Bravo's buso renkin and wounds him. Bravo accepts that Kazuki has become strong and allows him to continue his search for a cure. However, they are then interrupted by Hiwatari's appearance.

    Director:Unknown
    Writer:Unknown

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  25. Buso Renkin Season 1 Episode 22 - A Decision Is Required
    6.3/10(8 votes)

    #25 - A Decision Is Required

    S1:E22

    The Alchemist Warriors find and engage Victor in battle. Meanwhile, Kazuki, Tokiko, Gouta, and Papillon arrive at the school and meet a mysterious figure who introduces herself as Victoria and leads them to her brain in a vat mother, Alexandria, the creator of the black kakugane. Alexandria reveals her creation, a white kakugane, and explains it is able to negate the effects of the black kakugane. However, with only one in existence, Kazuki must decide whether to use it on himself or Victor.

    Director:Unknown
    Writer:Unknown

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Best Episodes Summary

"Signs of Death" is the best rated episode of "Buso Renkin". It scored 7.7/10 based on 9 votes. Directed by Tsuyoshi Yoshimoto and written by Unknown, it aired on 12/27/2006. This episode scored 0.2 points higher than the second highest rated, "To Protect Someone".