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Sonosuke Izayoi
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I'm going to kill you here. For love and dewicious sweets!

Danganronpa 3: Future Arc

Sonosuke Izayoi (十六夜 惣之助) is a character featured in Danganronpa 3: The End of Hope's Peak High School.

During his time in Class 76th at Hope's Peak Academy, his title was the Ultimate Blacksmith[1][2] (超高校級の「鍛冶屋」 lit. Super High School-Level Blacksmith). After leaving Hope's Peak, his title was updated to the Former Ultimate Blacksmith[2].

He is a member of the Future Foundation and is the Branch Office 9 Director. His responsibility as the director is preparation, development, and management of armaments/weapons. He, along with the other Future Foundation Directors, is forced to participate in the Final Killing Game.


He has a tall, lean build, pale blonde hair, sharp brown eyes, pale skin and a serious expression. He wears a red trench coat and wears his Future Foundation ID on his left shoulder. Sonosuke wears dark red fingerless gloves, baggy black pants, and dark brown boots. He carries a multitude of weapons hidden in his coat.

During his high school days, Sonosuke wears Hope's Peak Academy uniform and a red tie underneath his red jacket.


Sonosuke is stated to be a "silent type", who avoids talking to others, the only exception being his romantic partner Ruruka. He is incredibly loyal and very protective of her, drawing a hidden weapon from his coat on any person who gets close to her. Sonosuke loves Ruruka's candy and Ruruka seems to feed him as a reward, him often resting his head on her lap. Though otherwise calm and serious, the way he eats candy and says "dewicious" is rather comical.

Sonosuke is very loyal to Ruruka as he never hold back and show his full splendor towards his enemy in order to protect her. Without any remorse, he set a trap that severely injured Seiko Kimura's right hand and took out all of his hidden weapons to fight her until she reached her demise.

Once Sonosuke's trust is broken, it is very difficult to gain it back, as he believes "once a traitor, always a traitor". However, he doesn't mind when Ruruka betrays him or even when she takes his life, as he loves her very much and thus doesn't consider it a betrayal.

Talent & Abilities[]

Ultimate Blacksmith[]

Being the former Ultimate Blacksmith, Sonosuke is skilled at developing and using different weapons, and he stocks all kinds of hidden weapons inside his coat. Though usually meant for practical use, he can also make ones for collection purposes and he will forge basically any blade upon request.

Sonosuke's parents, who apparently were also blacksmiths, taught him from a very young age. As a result of the endless teaching and experience, Sonosuke became very skilled at forging materials, mainly weapons. In the Academy, he has opened his own shop and take requests from people to forge any weapons that requested. He created weapons for two purposes, for practical and collection purposes. He takes a special interest in weapons that would typically used by ninja.

In addition to forging several types of weapons, Sonosuke is shown to be able to create many kinds of traps, such as explosives that can be triggered with a switch or pressure activated traps.

When he joined the Future Foundation, Sonosuke is trusted with the distribution of their weapons.

In other languages[]

Sonosuke's talent as it appears in official translations of Danganronpa material.

Language Talent Translation
日本語 Japanese 超高校級の「鍛冶屋」 Super High School-Level Blacksmith
元・超高校級の「鍛冶屋」 Former Super High School-Level Blacksmith
Deutsch German Super-Highschool-Schmied Super Highschool Blacksmith *
Ehemalig: Super-Highschool-Schmied Former: Super Highschool Blacksmith *
italiano Italian Super Fabbro Liceale Super High School-Level Blacksmith *
Ex Super Fabbro Liceale Former Super High School-Level Blacksmith *
français French Ultime Forgeron Ultimate Blacksmith *
Ancien Ultime Forgeron Former Ultimate Blacksmith *

Fighting Abilities[]

Sonosuke has much fighting experience. He is shown fighting against the Ultimate Despair and Seiko with his knives, and he is quite tactful when it comes to battle as he always prepares extra weapons and traps before engaging into a fight, even carrying a multiple loads of weapons hidden inside his coat.

Sonosuke has exceptional aim, being able to throw his knives where he chooses and rarely misses. Ruruka often tells Sonosuke to throw knives at whoever is being disrespectful to her. Sonosuke is also seen throwing knives to protect his lover.


Prior to the Tragedy[]

Sonosuke comes from a family of blacksmiths and his parents taught him their art from a young age. 

He also has gone to the same school with Ruruka and Seiko all through elementary, middle and high school. He is in a romantic relationship with Ruruka.

As a teen, Sonosuke was scouted to attend Hope's Peak Academy as a part of Class 76th as the Ultimate Blacksmith. Around his second year, he opened his own shop.

Danganronpa 3: The End of Hope's Peak High School - Despair Arc[]

Episode 04 - The Melancholy, Surprise, and Disappearance of Nagito Komaeda[]

During their practical exam in their second year, an incident involving Nagito's plot to stop the exam caused Seiko's drug being mixed up by Ruruka and used her super-laxative instead of a strength drug in Ruruka's pastry, combined with Seiko, unfortunately receiving Nagito's bomb switch (which was later triggered, resulting in an explosion), resulted in Seiko, Ruruka, and Sonosuke expelled from Hope's Peak Academy an estimated 2–3 years before the Tragedy.

Sonosuke agreed with Ruruka's point of view and felt betrayed by Seiko, placing the blame of expulsion upon each other and caused a rift in their friendship.

Danganronpa Gaiden: Killer Killer[]

Chapter 10 - Killer Killer Killer[]

When Shūji Fujigawa attempts to fatally wound Misaki Asano by piercing her in the back, Sonosuke throws a blade and managed to throw Shūji's knife at the last second. Juzo Sakakura, Ruruka, and Ikue Dogami appear alongside him, attempting to fight Shūji, seeing as he has harmed a member of the Future Foundation. To his delight, Ruruka occasionally praises him, as well as gives him orders.

As Sonosuke, Juzo, Ikue corner Shūji, the real Killer Killer, he detonates a bomb and makes an unseen escape. Sonosuke reflexively moves to Ruruka's side and is disappointed seeing that Shūji managed to escape from their grasp.

Chapter 11 - My Buddy is You[]

Danganronpa 3: The End of Hope's Peak High School - Future Arc[]

At some point in time after getting recruited by Koichi Kizakura for the Future Foundation, he became the head of the 9th Division. His responsibility as the 9th Division leader is to aid in the preparation, supply, management and distribution of weapons.

Sonosuke is one of the twelve executives that attended Makoto Naegi's trial, and thus became one of the final players in the Final Killing Game, set by Monokuma.

Episode 01 - Third Time's the Charm[]

At the beginning of the episode, Sonosuke along with Kyosuke Munakata and Juzo were protecting some members of Future Foundation from Fuyuhiko Kuzuryu, Peko Pekoyama, Nekomaru Nidai, and Akane Owari's attack.

Sonosuke was present with the other ten Division leaders of Future Foundation to discuss Makoto Naegi's betrayal. Despite being one of the Division leaders, he didn't follow along with the discussion as he was resting his head on Ruruka's laps and eating her sweets, commenting on how tasty it was.

As Makoto, Kyoko Kirigiri, and Aoi Asahina arrived, Juzo immediately handcuffed Makoto, injuring him in the process. When Hina tried to intervene, Sonosuke and Ruruka threatened Hina, Sonosuke throwing his kunai at her. The trial was postponed and Sonosuke stayed at the boardroom until the Future Foundation's off-shore facility got attacked.

Kyosuke gathered everyone inside the boardroom as the attack was getting harsher. Everyone started to panic as Daisaku Bandai confirmed that all the exits to the building has been cut off. Later, a sleeping gas was thrown inside the boardroom and Sonosuke reflexively protected Ruruka, but eventually all of them were rendered to sleep.

After he woke up, Sonosuke and the others found a Monokuma bracelet had been set up on their wrists. He learned that Monokuma has been resurrected and announced the Final Killing Game of mankind's last hope Future Foundation via the monitor, started with Chisa Yukizome's body, which fell from the ceiling.

Episode 02 - Hang the Witch[]

Sonosuke keep sticking together with Ruruka when Monokuma announced the rules of the Final Killing Game. He refused Ruruka’s reward judging from the dire situation that they faced. Later, he and Ruruka point at Seiko, believing she is the traitor, however Kyosuke believes they are pointing at Makoto because Seiko was hiding behind Juzo.

Following Makoto’s escape, Ruruka and Sonosuke parting from everyone to hide from the traitor. Sonosuke agreed with Ruruka that the traitor has to be Seiko, stating that someone who have ever betrayed someone in the past will do it again in the future.

Episode 03 - Cruel Violence and Hollow Words[]

Sonosuke and Ruruka were in the entrance together and promised to not betray each other's trusts. Later, they encountered their former classmates, Seiko who accused them being the traitor. As Ruruka and Seiko's argument heated, Seiko ate some sort of green pill that she invented, causing her to go into a berserker-like state. Sonosuke threw a kunai at Seiko and held Ruruka on his shoulder, started to run from Seiko.

Episode 04 - Who is a Liar[]

Sonosuke and Ruruka set many traps on the wall to halt Seiko's pursue. Unfortunately, due to Seiko pills' effect, she was immune to Sonosuke bombs' damage. Later, Sonosuke tried to stop Seiko alone and letting Ruruka escape, using barrels to barricade the door.

Ruruka tried to calm her former classmate but her words can't get through Seiko due to her hatred for both Sonosuke and Ruruka. It was revealed that due to an event occurred during their time in Hope's Peak Academy, the three of them expelled from the Academy. Seeing further resistance can't hold Seiko anymore, Sonosuke once again brought Ruruka to run.

Episode 05 - Dreams of Distant Days[]

Sonosuke set his doppelganger formed with sharp objects which effectively injured Seiko's right hand. He appeared and dropped various knives to the floor, stating that he will kill her in the name of love and delicious sweets of Ruruka.

Sonosuke proceeded to battle Seiko in a short time before she drew her attention to Ruruka. He moved to Ruruka's side inside the arena's monitoring room. After Ruruka learned Seiko's NG Code, Sonosuke listened to her whisper and soon left the area to prepare his weapons to finish Seiko.

Inside the lounge, Sonosuke was ashamed to choose a gun over a blade. Suddenly, the ground shook and revealed a secret entrance behind a book shelf, distracting Sonosuke.

Episode 06 - No Man is an Island[]

After the time limit hit, Sonosuke was found dead, along with Seiko, by Kyoko, Ryota Mitarai, and Koichi with the attacker's signature knife stabbed into his chest. While Kyoko inspected his body, she found a white powder-like substance on his face, with blood directly under his left eye.

Episode 08 - Who Killed Cock Robin[]

Based on her analysis of Sonosuke's corpse, Kyoko accused Ruruka as the culprit instead of the unknown attacker. She explained that he had been poisoned by his bracelet, which displayed the NG code of putting food in his mouth, and the attacker's knife had come from Seiko's body to disguise the true cause of death. Kyoko theorized that Ruruka had killed Sonosuke by force-feeding him one of her sweets; given the presence of the secret entrance in the lounge. Kyoko suspected the motive Ruruka had to kill her romantic partner was because of her forbidden action which was allowing anyone to leave the building.

Episode 09 - You are My Reason to Die[]

Ruruka thought back to the events that lead up to Sonosuke's death. Sonosuke told Ruruka about the secret exit, sealed it up, and laid down several traps to prevent someone from getting out. Ruruka asked Sonosuke not to betray her again, and Sonosuke said he wouldn't. Ruruka kissed Sonosuke, and then slipped a sweet into his mouth. Ruruka cried as she told Sonosuke she can't risk him betraying her, so she'll betray him first. Sonosuke said it wasn't a betrayal and that he understood. He then kissed Ruruka again and confessed his love to Ruruka before he finally took his last breath.

Danganronpa 2.5: Nagito Komaeda and the World Vanquisher[]

Sonosuke returned as a part of Nagito Komaeda's imaginary world following his death from the Neo World Program.

On Nagito's way to school in the morning, he noticed Sonosuke, Ruruka and Seiko all walking together and talking with each other happily.

They are later seen at a café near the school campus, Sonosuke, Ruruka and Seiko all sitting and talking with each other as friends while enjoying refreshments.

Danganronpa V3: Killing Harmony[]

Sonosuke appears as a minor character in the bonus mode Ultimate Talent Development Plan. He is often seen eating his girlfriend's candy.

At one point, Monophanie is seen looking at him lovingly, seemingly having a big crush on him. However, it turns out that she simply wants his candy and the two begin to fight over it.


Main article: NG Code Poisoning



Ruruka Ando[]

Both Sonosuke and Ruruka were apart of Class 76th. They are a romantic couple and close since childhood, which is confirmed by their school profiles. Sonosuke is the type of person who doesn't like to speak or interact with others, with Ruruka being the exception. According to the relationship chart, they have a mutual trust and reliance on each other. He says that he cares about Ruruka more than he cares about himself. When the Incident occurs in the Future Foundation, Sonosuke is seen carrying Ruruka in his arms in multiple scenes; as he wants to protect her, cares about her, and loves her.

Sonosuke is shown to be intimate with Ruruka, such as laying his head on her lap but seems to be seeking Ruruka's candy as a reward, as he happily allows her to drop sweets into his mouth. The two seem to be partners, Sonosuke protecting Ruruka, and receiving her treats as a reward. He has been laying on Ruruka's lap since they were kids and seems like this is a trademark that is rather comedic.

After Ruruka told Sonosuke not to betray her, he swore he wouldn't "by love and delicious sweets". However, when Sonosuke discovers a secret exit, Ruruka appears to be so afraid of a possible betrayal that she kills him by breaking his NG code, betraying him before he can betray her. When they're alone, Ruruka pulls him into a kiss and then puts a sweet in his mouth. Sonosuke tastes the sweet and his NG Code activates the poisoning that Monokuma had explained earlier on. However, when Ruruka pulls away; she describes how she didn't want Sonosuke to betray her. Sonosuke doesn't consider it a betrayal and says that he loves her, giving her one final kiss right before he dies.

It's been described that at least some of Ruruka's candy are as strong as narcotics and give her an ability to control other people. However, while Sonosuke really loves her candy, it seems he is not addicted to them in this manner as he continues to protect and truly loves her while not allowed to eat any candy during the Final Killing Game.


Seiko Kimura[]

Seiko was an acquaintance of Sonosuke's and fellow member of Class 76th. The two were on good terms, as both were close friends of Ruruka since childhood. However, the three unintentionally got involved in a school bombing thanks to Nagito and were expelled because of this. Sonosuke believes Seiko to be responsible for the incident and now distrusts her, and is determined to protect Ruruka from her.

A drawing from Lerche's Twitter shows Ruruka attempting to feed Seiko her treats in the afterlife. Sonosuke threatens her with a knife, demanding Seiko to eat Ruruka's treats, reasoning that they are dead anyway.


Danganronpa 3: The End of Hope's Peak High School/Future Arc (English)

Episode 02:

  • "One who's betrayed in the past will do it again." (About Seiko)

Episode 05:

  • "You can't eat these dewicious sweets? I could never live like that."
  • "I'm going to kill you here. For love and dewicious sweets!"

Episode 09:

  • "I care about you than myself."
  • "That isn't a betrayal... I understand. It's okay, Ruruka. I love you."


  • His given name, Sōnosuke (惣之助), can loosely translate to "helper of all."
    • His surname, Izayoi (十六夜), means "the sixteenth night."



v  e
The Animation
Makoto NaegiMonokumaAoi AsahinaAlter EgoByakuya TogamiCelestia LudenbergChihiro FujisakiGenocide JackHifumi YamadaJin KirigiriJunko EnoshimaKiyotaka IshimaruKyoko KirigiriLeon KuwataMondo OwadaMukuro IkusabaSakura OgamiSayaka MaizonoToko FukawaYasuhiro Hagakure
Danganronpa 3:
End of Hope's
Peak High School
Future Arc
Main Characters Makoto NaegiAoi AsahinaByakuya TogamiChisa YukizomeDaisaku BandaiGreat GozuJuzo SakakuraKazuo TenganKoichi KizakuraKyoko KirigiriKyosuke MunakataMiaya GekkogaharaMonaca TowaMonokumaMonomiRuruka AndoRyota MitaraiSeiko KimuraSonosuke IzayoiYasuhiro Hagakure
Minor Characters Komaru NaegiToko FukawaGenocide JackWarriors of Hope
Danganronpa 3:
End of Hope's
Peak High School
Despair Arc
Main Characters Junko EnoshimaMukuro IkusabaIzuru KamukuraAkane OwariChiaki NanamiChisa YukizomeFuyuhiko KuzuryuGundham TanakaHiyoko SaionjiIbuki MiodaKazuichi SodaMahiru KoizumiMikan TsumikiNagito KomaedaNekomaru NidaiPeko PekoyamaRyota MitaraiSuper High School Level ImposterSonia NevermindTeruteru Hanamura
Minor Characters Jin KirigiriJuzo SakakuraKazuo TenganKoichi KizakuraKyosuke MunakataNatsumi KuzuryuSatoThe Student Council
Main Characters Nagito KomaedaFuyuhiko KuzuryūKazuichi SōdaMikan TsumikiPeko PekoyamaSonia NevermindWorld Vanquisher
Minor Characters Akane OwariChisa YukizomeGundham TanakaHajime HinataHiyoko SaionjiIbuki MiodaMahiru KoizumiMakoto NaegiNekomaru NidaiRuruka AndoRyota MitaraiSayaka MaizonoSeiko KimuraSuper High School Level ImposterSonosuke IzayoiTeruteru Hanamura
For minor characters, see: Minor Characters
v  e
Future Foundation's
Branch Office 6
Takumi HijiriharaMisaki AsanoIkue DogamiJuzo SakakuraMekuru Katsuragi
Serial Killers Eiichiro SaiyamaKenji TsuruhashiMimiko TomizawaMomomichi ItoRei ShimizuShūji FujigawaTed Chikatilo
Future Foundation Members Chisa YukizomeKazuo TenganKyoko KirigiriKyosuke MunakataRuruka AndoRyota MitaraiSonosuke Izayoi
Minor Characters Junko EnoshimaMukuro IkusabaChusuke OyamaKinari KunugidaSakuma Fujii