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The article below is based on non-localized content only available in Japanese.
As such, all information in this article is based on fan-contributed translations.


The Sirius Astronomical Observatory Murder Cases are one of many events hosted by the VCC and the first and final Duel Noir cases featured in the first and seventh volume of Danganronpa Kirigiri.

The participants of the first Sirius Observatory Murder Case are five members of the Detective Library, with Tadashi Asakura and Tōkichirō Endō acting as the Allurements of this case.

The participants of the seventh parallel are four members of the Detective Library, with Mikado Shinsen, Tōkichirō Endō and Yuhain acting as the Allurements of this case.

History

Translation Credit: @Edogawa Translations and @Kamase Megane on Tumblr

Danganronpa Kirigiri

Volume 1

The Sirius Astronomical Observatory Murder Case is hosted by Tōkichirō Endō; Tadashi Asakura is the Culprit selected and responsible for the murders that occurred inside the Sirius Astronomical Observatory. Tadashi first meets Tōkichirō in a park who tells him about the organization and then says that he will reveal to him the identity of the real criminal of the one who murdered his family under one condition. Tokichiro begins to tell him about Catharsis and, to get it, he must play a game called a Duel Noir, along the way telling him different rules. Having finished with all the rules, Tokichiro says that he cannot tell him who the criminal is, until he agrees to participate in the game and gives him one night to think it over and asks him to come to the park at ten o'clock in the morning. Tadashi accepts and says goodbye to the old man.

Five detectives are contacted to solve a case located on the Sirius Observatory who all first arrive at Hatesaki Station. Yui Samidare (DSC 888), Kyoko Kirigiri (DSC 919), Eigo Amino (DSC 367), "Shīta Enbi", and Kō Inuzuka (DSC 943)— were the detectives who were called to the case. The Detective group later arrived at the Sirius Astronomical Observatory and started to investigate the building and its furnishings. However, Yui along with the other detectives was tricked as the client never showed up, but instead, they ended up in another situation.

Later when Yui and Kyoko woke up, together they investigate the mystery surrounding the Observatory. The culprit, Tadashi is later revealed when he surrenders in front of Yui and Kyoko after the latter threatens to burn the building to the ground, to which they find him hiding in a small chair. Yui asks him who he is, to which he replies that his name is Tadashi Asakura. Tadashi confesses that he killed three people and lost, and later says that he sent an order on behalf of Ooe Yoshizono to five detectives to collect them in this place. He also adds that in Shita's letter, he indicated the time of gathering a little earlier to call him in advance before he killed, dismembered, and hid him in the telescopes and the chair, while he pretended all this time to be Shita and did not let anyone go to the telescopes. Tadashi was surprised that a novice detective like Kyoko was able to defeat him and asked her when she first noticed that the chair in which she sat, hid him, to which she says that this was part of her analysis from the very beginning.

Volume 7

Both Tōkichirō Endō and Mikado Shinsen hosted the final parallel, and intitially, Yui was called upon a meeting with Tōkichirō, with the old man wishing she would make a decision regarding the offer and the results of her sister's murderer. At first she conemplates taking revenge and accepting the offer to assemble her deck, but she waits until Tōkichirō's assigned time in which she returns with her decision.

A little time before the designated meeting, Samidare meets Mikado Shinsen, in which they converse a little regarding her intent and the role she will play, with her refusing to take the role as the 'Victim'. Mikado talks about the intent of him and the VCC, stating that he created the Committee to 'save' others he couldn't save himself, and to eventually uncover someone who would be the "Ultimate" Detective. He also states that she should cut off her emotions, and help Kyoko 'save' the future- Speaking of Kyoko in a way and how she can change the world, seeing the potential in her. He also stated that she would be taken out if Yui were to reject the assigned Duel Noir.

Yui contemplates 3 options-

1) To accept the offer and risk losing herself,

2) To reject the offer at the cost of Kyoko's life, or

3) To kill Shinsen right here and now.

While those thoughts has passed through her mind, Mikado speaks up that even if he would get killed, the Committee would still flourish and operate in an 'automatic' state. He opens his handkerchief to reveal a silver blade, in which he aims it at his temple to prove a point that Yui will do anything for Kirigiri and just as she screams for him to stop, Mikado ends his life. Another man, Fuhito Kirigiri, rushes over and concludes that indeed he is deceased, in which Mikado lays lifeless at the bench. Yui leaves the scene to a train, in which she meets Tōkichirō Endō again, informing him of her decision.

Kyoko and Yui make preparations and they are dropped to the location, then meeting 3 other people: Yukimura Shiroko - DSC 880, Kadomi Senshi - DSC 920, and Yuhain.

Deck Information

1st Case

Location: Sirius Observatory- 30 million yen

Weapon: Large shears- 5 million yen

Weapon: Fainting drugs- 5 million yen

Trick: Dismemberment- 80 million yen

Total Cost - 120 million yen

The Assigned Detective for this Noir is Yui Samidare.

7th Parallel

Location: Sirus Observatory - 1.5 billion yen

Weapon: Carbidotoxin - 30 million yen

Weapon: Paralytic - 10 million yen

Trick: ‘Behind closed doors’ - 400 million yen

Other: Cash - 100 million yen

Other: Chains - 50 million yen

Total cost - 2.14 billion yen

The Assigned Detective for this Duel Noir is Kyoko Kirigiri.

Participants

1st Case

Host

Profile DSC number Status
Tokichiro Endo Headshot NoBG.png

Tōkichirō Endō*
- Alive

'Victim'

Profile DSC number Status
DisguisedTadashi.png

Tadashi Asakura
245 (Impersonation) Deceased

Detective Library

Profile DSC number Status
YuiSamidareHeadshot.png

Yui Samidare
888 Alive
Kyoko Kirigiri DRK ID.png

Kyoko Kirigiri
919 Alive

Eigo Amino

Gender: Male.png Male / Status: Deceased
Eigo Amino Infobox Image.png Eigo Amino (綱野 英吾) was a member of the Detective Library that was called alongside four other detectives to the Sirius Observatory. Upon arriving there he, unknowingly, took part in a Duel Noir where he was murdered by the culprit.
Appearance:

Eigo wears a long coat and looks like a normal salaryman to the rest of the world. He has brunette hair, brown eyes, and brown eyebrows, which match what he's wearing. Yui Samidare describes him as having no "individual personality" as a result of his looks. He also carried a briefcase around with him.

Personality:

Eigo is an arrogant slacker, but despite his personality, he sucks up to those of higher rank than him, such as Ko. In contrast, he looks down on those of lower rank than him in order to inflate his ego and is very insecure about his own rank. He can also be very rude towards others.

Throughout his time at the Sirius Observatory, he's shown to be easily annoyed and is rattled by the situation. He frequently suggests abandoning the case when it becomes clear something is wrong, showing a sense of pragmatism. He has shown a lack of foresight, such as not prepping supplies if he finds himself stranded. He seems to enjoy listening to music while reading and has a smoking addiction.

History:

Eigo is a 35-year-old detective and specializes in business crime and ranked 7. His DSC number is 367. On December 22, He was called to the Sirius Observatory by Tadashi Asakura under the alias of Yoshizono Ooe. He accepted and was joined alongside four other detectives: Kyoko Kirigiri, Yui Samidare, Kō Inuzuka and Shita Enbi at the Hatesaki Station. During their escort trip to the Observatory by van, Eigo bragged about his rank and was rude to Ko as a result of the detective's behavior and appearance, until he was shown Ko's standing outranked him. From there, he began sucking up to him, acting as his apprentice, and letting Ko teach him about the Observatory.

When the van let them out in the middle of nowhere, he complained and tried to coax the driver who refused to continue onward. However, he was stopped by Ko and joined the others in walking to the Observatory. Once there, and their investigation showing no one else was present, he suggested they leave the Observatory, but is swayed to stay by Ko's believing this is a test, as well as the fact a blizzard was currently blocking their way back. When the five agreed to split up to continue their investigation, he offered to join up with Yui and Kyoko, but only did so in order to take a smoke break. However, he reported feeling dizzy before ultimately falling unconscious, a fate that applied to the rest of the detectives.

During this time, he was returned to his room and killed via dismemberment by the culprit of the case Tadashi Asakura who posed as Shita, with his body parts aside from his head being switched with another. After Tadashi's defeat, it was revealed Eigo was killed merely as a way to complete his murder trick.

Kō Inuzuka

Gender: Male.png Male / Status: Deceased
Kō Inuzuka Infobox Image.png Kō Inuzuka (犬塚 甲) was a member of the Detective Library that was called alongside four other detective to the Sirius Observatory. Upon arriving there he, unknowingly, took part in a Duel Noir where he was murdered by the culprit.
Personality:

Yui Samidare initially thinks Kō is a poor drunk man, judging from his looks. Her impression of him changes drastically after Kō deduces her lifestyle simply by taking a look at her. Despite his love for alcohol, Kō is a keen detective and takes on the role of a wise mentor figure towards the others. However, he also likes to show off his easily obtainable knowledge, indicating he loves trying to make himself seem impressive.

However, this love for the spotlight does reveal something darker when its revealed Ko would do anything to raise his rank in the Library, even if it means committing arson and killing others if it gives him a way to shoot up quickly. He also is implied to be somewhat perverted.

History:

Kō is 41 years old, making him the oldest detective of the group, and specializes in murder. He also has the highest rank. His DSC number is 943. Back in his school years, he was a part of his schools astronomy club. On December 22nd he was called out by Tadashi Asakura under the name of Yoshizono Ooe to meet up at the Sirius Observatory and met up with four other detectives at Hataski Station, being the fourth to arrive. There he met Yui Samidare and, while the girl was initially disapproving of his behavior, showed himself as a capable detective by figuring out her lifestyle just by observing her alone. From there, he joins the other detectives in entering a van that will take them to the Observatory. During the ride, he was insulted by Eigo Amino until he silenced him by revealing his DSC rank, which was higher than anyone else in the van. As a result, this caused Eigo to fawn over him and allowed him to explain his knowledge on astronomy and the Observatory (something that Yui points out was either out of date or could be looked up easily). When the van stopped in the middle of nowhere and they were forced to continue on, Kō managed to get Eigo from threatening the driver and to continue onward. When asked about what he plans to do about the heat, he mentions sharing the booze with the other men whilst, perversely, mentioning the girls could "share their body heat".

Once they arrive, he and the other detectives get to work investigating the Observatory when their proxy doesn't arrive. During this investigation, he gives an explanation of the type of telescope that goes there and pushes for the others to stay, assuming that this was merely a test. He teamed up with the detective, Shita Enbi, for another investigation, and when they reported back, Kō fell unconscious as a result of ingesting drugged cans of coffee that was given out during the van ride.

During his time unconscious, he was placed back in his room and was killed by Tadashi Asakura via dismemberment alongside, Eigo and Shiita. All three had their body parts switched with each other. After Tadashi's defeat, it was revealed that Kō was actually an arsonist who, as a detective, solved his own crimes to raise his DSC rank. Years ago, he was the serial arsonist that burned down multiple private homes in a neighborhood and pinned the blame on an astrologist who, allegedly, committed suicide. At the time, he got away with it and received acclaim. Tadashi Asakura was one of the victims that had lost his family due to the arson and his legs had to be amputated. Because of this, Tadashi grew bitter and accepted the Duel Noir to exact revenge on Kō.

Trivia:
  • "Kō" (甲) means "first class" or "A grade", but also "carapace". These different meanings altogether reflect how despite his unsightly appearance, Inuzuka is a detective of a very high ranking - the highest of all detectives featured in the novel.
  • "Inuzuka" (犬塚) means "dog's hillock".
    • It should be noted that aside from simply meaning "dog", 犬 inu is also the Japanese equivalent of the English colloquialism "snoop", which means "detective".

Shīta Enbi

Main article: Shīta Enbi


7th Parallel

Host(s)

Profile DSC number Status
Mikado Shinsen ID.png

Mikado Shinsen*
000 Deceased
Tokichiro Endo Headshot NoBG.png

Tōkichirō Endō*
- Alive

'Victim'

Profile DSC number Status
Yuhain - Deceased

Detective Library

Profile DSC number Status
Kyoko Kirigiri DRK ID.png

Kyoko Kirigiri
912 Alive
YuiSamidareHeadshot.png

Yui Samidare
885 Deceased

Yukimura Shiroko

Gender: Female.png Female / Status: Deceased
Yukimura Shiroko (雪村白弧) is a DSC registered Detective with the rank of 880 and the specialty of 'Kidnapping', much like Yui.
Appearance:

Yukimura is a woman described by Yui as 'beautiful', with fair eyes and hair that is tied up around the nape with a scrunchie.

History:

Yukimura is also a mother to a 5 year old boy and a 4 year old girl, and is willing to take risks to ensure their safety and well-being. She, along with Yui and Kyoko knew the information about the Sirius Astronomical Observatory Murder Case and offered to pick them up and transport them to the location. With her nature she tends to poke around and crosses limits, as she converses with Yui and Kyoko on how she knows the challenge's contents, the Duel Noir broadcast circuits, Mikado Shinsen's death and the state of the Committee.

Kadomi Senshi

Gender: Male.png Male / Status: Deceased
Kadomi Senshi (門美戦士) was a member of the Detective Library that was called alongside four other detectives to the Sirius Observatory. His registered DSC number is 920 with the specialty of 'Robbery'.
Appearance:

A man described by Yui to have an old crescent scar on his buzz cut hair, and a muscular physique that has been seen though the sloppily worn military bomber. Even with this, he wears a bit of foundation and other light makeup on his face, and that too is crudely applied. At one time, Yui thought he was a woman at first but the thought was struck down upon seeing the rest of his features.

Death Order

Case 1
Participant Cause of death
ShitaEnbiHeadshot.png Shīta Enbi Murdered by Tadashi Asakura
KoInuzukaHeadshot.png Kō Inuzuka
EigoAminoHeadshot.png Eigo Amino
DisguisedTadashi.png Tadashi Asakura Killed by the Victims Catharsis Committee
Survivors
YuiSamidareHeadshot.pngKyoko Kirigiri DRK ID.png
Yui Samidare and Kyoko Kirigiri
7th Parallel
Participant Cause of death
Yukimura Shiroko Poisoned & stabbed by Yuhain
Kadomi Senshi Stabbed by Yuhain
Yuhain Dragged down a cliff by Yui Samidare
YuiSamidareHeadshot.png Yui Samidare Impaled and crushed by the Observatory's exploding debris, burned to death
Survivors
Kyoko Kirigiri DRK ID.png
Kyoko Kirigiri

Results and Aftermath

Volume 1

  • Yui Samidare and Kyoko Kirigiri become detective partners and eventually form a friendship.
  • Finishing the Observatory Case, another Duel Noir was about to be hosted at Norman's Hotel, discovered by outside means of directly messaging another registered detective through the DSC.
  • Tōkichirō Endō, although 'participated' indirectly, scouts and allures under orders to a parallel Duel Noir in Volume 7.

Volume 7

  • Kyoko wakes up in a hospital with both her hands bandaged, with the presence of Salvador Fukuro Yadorigi and the Innocents of the 'Libra Girls' Academy' welcoming her. They reiterate on the conditions she's suffered along with Samidare's fate.
  • Fuhito Kirigiri is put under police investigation upon suspicion of killing Mikado Shinsen.
  • Upon visiting the Detective Library, Kyoko's DSC ranks up from 912 to 910, and even with her goals of obtaining a Zero she does not feel any accomplishment or happiness as a result. She then finds Yui's note under an unrelated file with her birthday and a poem written on it.
  • Salvador states that the Committee is still operating and requests her help, in which she accepts after some mourning and contemplation.
  • A few years later, Kyoko was scouted into Hope's Peak Academy; She receives a message from a client and proceeds to leave but collided in the halls with Makoto Naegi. He picks up her fallen DSC card and tells her what he knew about the neighboring case, with her curiosity of the boy blooming.

Navigation

v  e
DANGANRONPA UNIVERSE
Major Events Before The Tragedy Giboura MassacreDuel NoirTwilight Syndrome Murder CaseIzuru Kamukura ProjectThe Tragedy of Hope's Peak AcademyThe ParadeK2K System
During The Tragedy The TragedyNeo World Program (Danganronpa 2)Forced Shutdown
After The Tragedy The Gofer ProjectUltimate HuntNeo World Program (Danganronpa V3)
Duel Noir Sirius Astronomical Observatory Murder CasesNorman's Hotel CaseTwelve Zodiac Duel Noir ChallengeTakeda Haunted Mansion CaseLibra Girls Academy CaseWeidrun Mountain Villa CaseEdenside Amusement Park CaseThe Final Duel Noir
Killing Games Killing School LifeKilling School TripDemon HuntingFinal Killing GameKilling School Semester
Locations Hope's Peak AcademyJabberwock IslandKingdom of NovoselicTowa CityUltimate Academy for Gifted Juveniles
Organizations Detective Library - Ultimate DespairSayaka Maizono's Idol GroupStudent CouncilFuture FoundationThe Steering CommitteeWarriors of HopeThe ResistanceSHSL Elite Task ForceMonokuma KubsTeam DanganronpaD.I.C.E.