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One who's betrayed in the past will do it again.

–Sohnosuke Izayoi, Danganronpa 3: The End of Hope's Peak High School


Sohnosuke Izayoi (十六夜 惣之助 Izayoi Sōnosuke) is a character featured in Danganronpa 3: The End of Hope's Peak High School and a participant in the Final Killing Game.

He is a member of Future Foundation and the leader of the 9th Division. His responsibility is to aid in the preparation, supply, management and distribution of weapons.

During his time at Hope's Peak Academy's Class 76th, Sohnosuke's title was Super High School Level Blacksmith (超高校級の「鍛冶屋」chō kōkō kyū no “kajiya”) until he was expelled after getting involved in a bombing incident.

Sohnosuke was killed by his romantic partner, Ruruka Andoh, who forced him to violate his NG code. He is the second person to violate his NG code in the Final Killing Game, and the sixth to be killed overall.

The illusory Sohnosuke appears in the 30-minutes long OVA, Super Danganronpa 2.5: Nagito Komaeda and the Destroyer of the World as a part of Nagito Komaeda's imaginary world and Danganronpa 3 spinoff manga, Danganronpa Gaiden: Killer Killer.

Appearance

Sohnosuke is a man in his early twenties, around 23 at youngest (about 18 in Danganronpa 3 - Side: Despair).[1]

He has a tall, lean build. He has 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. Sohnosuke wears dark red fingerless gloves, baggy black pants, and dark brown boots.

It's also stated there is a multitude of weapons hidden in his coat.

Personality

Being the former Ultimate Blacksmith, Sohnosuke 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.

Sohnosuke 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. Sohnosuke 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.

To protect Ruruka, Sohnosuke doesn't hold back and show his full splendor towards his enemy. Without any remorse, he set a trap that severely injured Seiko's right hand and took out all of his hidden weapons to fight her until she reached her demise.

Once Sohnosuke'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.

Even though he is described as "cool" silent character and has a calm voice, in the official English dub he can sound notably angrier and more aggressive, and sometimes he uses language unlikely for the character (for example, "babe").

Talent

Ultimate Blacksmith

Sohnosuke's parents who apparently also blacksmiths taught him from a very young age. As a result of the endless teaching and experience, Sohnosuke 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. When he joined the Future Foundation, Sohnosuke is trusted with the distribution of their weapons.

Abilities

Combat

Sohnosuke has much fighting experience. He is shown fighting against the Ultimate Despair and Seiko Kimura with his knives.

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

Exceptional Trapper

In addition to forging several types of weapons, Sohnosuke 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.

Master Strategist

Sohnosuke is quite tactful when it comes to battle. He always prepares extra weapons and traps before engaging into a fight.

History

Prior to the Tragedy

Sohnosuke 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, Sohnosuke 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 - Side: Despair

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 Sohnosuke expelled from Hope's Peak Academy an estimated 2–3 years before the Tragedy.

Sohnosuke 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, Sohnosuke 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 praising him, as well as giving him orders.

As Sohnosuke, Juzo, Ikue cornered the real Killer Killer, he detonates a bomb and makes an unseen escape. Sohnosuke reflexively moved to Ruruka's side and disappointed as Shūji managed to escape from their grasp.

Chapter 11 - My Buddy is You

Danganronpa 3: The End of Hope's Peak High School - Side: Future

At some point in time after getting recruited by Kohichi 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.

Sohnosuke 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, Sohnosuke 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.

Sohnosuke 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, Sohnosuke and Ruruka threatened Hina, Sohnosuke throwing his kunai at her. The trial was postponed and Sohnosuke 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 Sohnosuke reflexively protected Ruruka, but eventually all of them were rendered to sleep.

After he woke up, Sohnosuke 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

Sohnosuke 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 Sohnosuke parting from everyone to hide from the traitor. Sohnosuke 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

Sohnosuke 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 beserker-like state. Sohnosuke threw a kunai at Seiko and held Ruruka on his shoulder, started to run from Seiko.

Episode 04 - Who is a Liar

Sohnosuke and Ruruka set many traps on the wall to halt Seiko's pursue. Unfortunately, due to Seiko pills' effect, she was immune to Sohnosuke bombs' damage. Later, Sohnosuke 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 Sohnosuke 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, Sohnosuke once again brought Ruruka to run.

Episode 05 - Dreams of Distant Days

Sohnosuke 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.

Sohnosuke 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, Sohnosuke listened to her whisper and soon left the area to prepare his weapons to finish Seiko.

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

Episode 06 - No Man is an Island

After the time limit hit, Sohnosuke was found dead, along with Seiko, by Kyoko, Ryota Mitarai, and Kohichi 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 Sohnosuke'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 Sohnosuke 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 Sohnosuke's death. Sohnosuke told Ruruka about the secret exit, sealed it up, and laid down several traps to prevent someone from getting out. Ruruka asked Sohnosuke not to betray her again, and Sohnosuke said he wouldn't. Ruruka kissed Sohnosuke, and then slipped a sweet into his mouth. Ruruka cried as she told Sohnosuke she can't risk him betraying her, so she'll betray him first. Sohnosuke 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.

Super Danganronpa 2.5: Nagito Komaeda and the Destroyer of the World

Main article: Sohnosuke Izayoi (Illusion)

Execution

Main article: NG Code Poisoning

Relationships

Romances:

Ruruka Andoh

Both Sohnosuke and Ruruka were apart of Class 76th. They are a romantic couple and close since childhood, which is confirmed by their school profiles. Sohnosuke 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, Sohnosuke is seen carrying Ruruka in his arms in multiple scenes; as he wants to protect her, cares about her, and loves her.

Sohnosuke 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, Sohnosuke 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 Sohnosuke not to betray her, he swore he wouldn't "by love and delicious sweets". However, when Sohnosuke 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. Sohnosuke 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 Sohnosuke to betray her. Sohnosuke 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 Sohnosuke 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.

Childhood:

Seiko Kimura

Seiko was an acquaintance of Sohnosuke'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. Sohnosuke 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. Sohnosuke threatens her with a knife, demanding Seiko to eat Ruruka's treats, reasoning that they are dead anyway.

Quotes

  • “I'm going to kill you here. For love and dewicious sweets!” (to Seiko Kimura)
  • “That isn't a betrayal... I understand. It's okay, Ruruka. I love you." (to Ruruka Andoh)
  • "One who's betrayed in the past will do it again."

Trivia

  • His given name, Sōnosuke (惣之助), can loosely translate to "helper of all."
    • His surname, Izayoi (十六夜), means "the sixteenth night."
  • Sohnosuke takes a special interest in weapons that would typically be used by ninja.
  • Sohnosuke owned his own shop, which was opened around his second year in Hope's Peak Academy.

References

  1. Heavily implied by the series' timeline. The flashback at the beginning of Side: Future #08 confirms that the mutual killings took place 'years ago'.

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ANIME CHARACTERS
Danganronpa:
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
Side: Future
Main Characters Makoto NaegiAoi AsahinaKyoko KirigiriJuzo SakakuraKazuo TenganKyosuke MunakataRyota MitaraiByakuya TogamiChisa YukizomeDaisaku BandaiGreat GozuKohichi KizakuraMiaya GekkogaharaMonaca TowaMonokumaRuruka AndohSeiko KimuraSohnosuke IzayoiUsamiYasuhiro Hagakure
Minor Characters Komaru NaegiToko FukawaGenocide JackWarriors of Hope
Danganronpa 3:
End of Hope's
Peak High School
Side: Despair
Main Characters Junko EnoshimaMukuro IkusabaIzuru KamukuraAkane OwariChiaki NanamiChisa YukizomeFuyuhiko KuzuryuGundham TanakaHiyoko SaionjiIbuki MiodaKazuichi SodaMahiru KoizumiMikan TsumikiNagito KomaedaNekomaru NidaiPeko PekoyamaRyota MitaraiSonia NevermindTeruteru HanamuraUltimate Imposter
Minor Characters Jin KirigiriJuzo SakakuraKazuo TenganKohichi KizakuraKyosuke MunakataNatsumi KuzuryuSatoThe Student Council
Super
Danganronpa
2.5
Main Characters

Nagito KomaedaKazuichi SōdaFuyuhiko KuzuryūWorld DestroyerPeko PekoyamaSonia NevermindMikan Tsumiki

Minor Characters

Hajime HinataHiyoko SaionjiMakoto NaegiSayaka MaizonoChisa YukizomeRuruka AndoSeiko KimuraSonosuke IzayoiIbuki MiodaRyota MitaraiSuper High School Level ImposterNekomaru NidaiIbuki MiodaMahiru KoizumiGundham TanakaTeruteru HanamuraAkane Owari

For minor characters, see: Minor Characters