Spoiler warning: Reveals the Volume 104 account of the seventeen-year-old case, Rum’s and Asaka’s identities, and the Volume 108 developments discussed below. Some events after the hotel incident remain unresolved.
Rum directed the operation that killed Koji Haneda, but Koji was not its original target. The Black Organization wanted Amanda Hughes’s influence and connections. She sent her bodyguard Asaka to safety; Koji hid Asaka and was killed for protecting her and knowing too much. Asaka survived and is now Rumi Wakasa.
Amanda and Koji died in different circumstances. She took the poison herself after being cornered by the Organization, while Rum’s side administered it to Koji. Their shared decision to protect Asaka links the two deaths without making them identical.
The Case Begins with Amanda, Not Koji
Seventeen years earlier, the Juke Hotel in the United States hosted a major chess tournament. Koji was a professional shogi player holding four titles, visiting to compete in chess as well. Amanda, a wealthy American admirer, was staying there with her bodyguard Asaka.
Koji and Amanda spent time playing chess before Rum’s team dismantled her protection. Amanda sent Asaka to Koji’s room on an invented errand. Koji continued that attempt to save her, even though he had come to the hotel for a game rather than a confrontation with the Organization.
Rum is the Organization’s second-in-command, now living near Conan as Kanenori Wakita of Beika Iroha Sushi, close to the Mouri Detective Agency. The contrast is chilling: the friendly sushi worker is the same man who cornered Amanda and pursued Asaka into Koji’s room. Seventeen years ago he still had both physical eyes, although the special memory ability remained only in the left.
A Rescue That Passed from One Person to Another
The sequence becomes easier to follow when the attempts to save Asaka are kept in order. Amanda gets her out of the targeted room. Koji conceals her and faces the pursuers. Hyoue Kuroda later finds her alive and tries to remove her from the hotel.
Tsutomu Akai enters the story afterward, when the Haneda family asks him to investigate. His disappearance belongs to the case’s aftermath. It does not place him, or his son Shuichi, at the hotel during the killings.
Who Was Involved?
Koji Haneda is the shogi champion killed after sheltering Asaka. Amanda Hughes is the original target, whose death occurs in a different room. Asaka is Amanda’s bodyguard and the surviving witness—not the murderer suggested by an early reading of the evidence.
Rum commands the Organization’s operation. Kuroda discovers the bodies and attempts a rescue. Tsutomu pursues the case later and disappears. These roles are now clearer to the reader than they were when the mystery first appeared; that does not mean every consequence, or the case’s public resolution, has been settled.
Koji’s calmness and ability to read ahead matter beyond his profession. He jokes gently with Asaka, then uses his judgment to protect her when the situation turns lethal. His Japanese voice actor is Hiroki Yasumoto. The clue he leaves behind is memorable because it follows a deliberate human choice, not simply a clever puzzle.
Where to Read or Watch the Revelations
The mystery emerges in fragments from Volume 89 onward. Volume 104, overall Files 1103–1109, brings the participants and their actions into one connected account. Files 1103–1105 cover the present-day chess tournament case; Files 1106–1109 contain the core historical sequence recalled by Kuroda and Wakasa.
The anime adaptation is international episodes 1222–1225 (Japanese episodes 1164–1167), which originally aired in Japan in June 2025. Crunchyroll lists the four parts as The 17-Year-Old Truth (The Bloody Knight), The 17-Year-Old Truth (The Perceptive Devil), The 17-Year-Old Truth (The Far-Sighted Bishop), and The 17-Year-Old Truth (The Queen’s Gambit).
The bishop installment is particularly important to the piece Wakasa still carries. The adaptation also gives the two protective relationships room to register: Amanda treats Asaka almost as a daughter, while Koji chooses to protect someone he has only briefly come to know.
How the Relationships Connect
Amanda admires Koji’s shogi and spends time with him during the chess tournament. Asaka’s father also served Amanda, and Amanda raised Asaka from childhood. Their bond extends well beyond an employer and a guard.
Koji expresses attraction to Asaka. That is not evidence of an established romance, nor does it confirm that her feelings were the same. What is clear is that both he and Amanda ultimately put her survival ahead of their own.
Kuroda initially looks like another enemy to Asaka. She wakes near Koji’s body, sees a stranger, and attacks him. His response reveals a different role: he treats her as a survivor in danger whose account needs to be heard.
The effects then spread into the Akai family. Tsutomu’s investigation draws him toward the Organization and helps explain Shuichi’s later pursuit through the FBI. Tsutomu and Mary’s second son, Shukichi, joins the Haneda family after high school, making Koji his elder brother through adoption. One incident changes the direction of several lives long after the hotel has emptied.
What Happened at the Hotel, in Order
Amanda Sends Asaka Away
Amanda realizes that she cannot contact her other guards and recognizes the danger posed by Rum, whom she has encountered before. Keeping Asaka nearby would give him someone to use against her.
She invents an errand to retrieve a chess piece from Koji’s room. An open warning would risk Asaka staying to fight; an ordinary instruction lets Amanda send her away without revealing why. Asaka’s devotion as a bodyguard is precisely what makes the deception necessary.
Amanda Takes the Poison Herself
Rum wants to exploit Amanda’s wealth, influence, and contacts. She understands that if she lives under his control, Asaka can continue to be used as leverage. Amanda takes the poison in Rum’s possession herself.
The poison is an earlier version of APTX 4869; its complete properties cannot be assumed identical to the present drug. Amanda’s immediate action is also distinct from forced administration. The Organization has cornered her, and her decision is an attempt to prevent Asaka from becoming a lasting bargaining tool.
Koji Hides Asaka
Asaka wants to return to Amanda. Koji recognizes that doing so would undo Amanda’s attempt to save her, renders Asaka unconscious, and hides her in the space behind a bookshelf.
She does not receive a full explanation before losing consciousness. Koji remains outside the hiding place to face those pursuing her. He was never the operation’s intended target, yet he accepts the danger rather than surrender the person entrusted to him.
Rum’s Group Confronts Koji
Rum’s men enter while searching for Asaka. Koji conceals her location and mentions Renya Karasuma, the name connected with the Organization’s boss. He has seen Rum, may be hiding a witness, and has reasoned toward a secret the Organization wants buried.
Rum’s side poisons him. Before dying, Koji uses a hand mirror to leave a message pointing toward Karasuma. He cannot save himself, but he protects Asaka’s hiding place and leaves another investigator a possible move against his killers. That final act makes his ability to think ahead painfully concrete.
Kuroda Attempts an Escape
Kuroda finds Amanda’s body and then enters Koji’s room, where he discovers Koji and the surviving Asaka. After she attacks him, he decides to hear her account somewhere safer rather than simply hand her over as a suspect.
He carries her out in a trunk used by the Organization. It contains a tracker, allowing the pursuers to follow. During the escape his car collides with a truck; he injures his right eye and subsequently spends roughly ten years unconscious. Helping Asaka costs him years of his own life.
Why Koji Was Killed
Amanda’s contacts extended into political and financial circles and included the FBI and CIA. Those connections made her valuable to the Organization. Koji, by contrast, had traveled for chess and was not investigating the group when the crisis began.
His position changes when he shelters Asaka and refers to Karasuma. Protecting a witness and demonstrating knowledge of the boss make him someone Rum’s side wants silenced. His death follows a choice to protect Asaka, not a preexisting assignment against the Organization.
Koji appears on the drug’s victim list, and his body is found. His death is established: he did not survive by shrinking as Conan and Haibara did. That outcome does not establish that the seventeen-year-old formulation was incapable of shrinking anyone, or that it had an invariably fatal specification. The earlier drug’s full properties remain a separate question.
Two Dying Messages, Two Different Warnings
Koji’s Mirror: CARASUMA
The hand mirror bears PUT ON MASCARA. Removing some letters leaves a set that can be rearranged as CARASUMA, pointing toward Renya Karasuma. Conan and Akai initially arrange the letters as RUM ASACA, apparently implicating the missing bodyguard alongside Rum.
Yusaku reads them as one name instead of two. The same letters then point past the operative and toward the boss. The reversal works because the evidence itself has not changed: the interpretation that made Asaka suspicious was incomplete.
Amanda’s Chess Clue: Watch the Eye
Amanda uses chess-related objects and lipstick to leave a warning. When Kuroda brings the clue to Conan, he interprets a combination of the words WATCH OUT and a visual detail directing attention to the eye. The words and the visual clue are separate elements, not a single literal code phrase reading Watch out eye.
Amanda knows the danger of Rum’s visual memory from an earlier encounter. Her message can be read as a warning to Asaka or whoever examines the room afterward. Koji names the power behind the operation; Amanda draws attention to a dangerous ability of the man executing it.
Taken together, the messages connect the hotel’s violence to the wider Organization headed by Karasuma. The case explains much more than Rum’s identity. It also leaves a path toward the person above him.
Why Rum’s Left Eye Was So Dangerous
Rum describes his ability as a form of photographic memory. He can retain and compare visual information, including faces, clothes, positions, gestures, and habits. A change of hairstyle or clothing may not conceal someone whose movements he remembers.
The Surveillance Footage Becomes a List of Targets
After the Organization gains access to the hotel’s surveillance system, Rum covers his right eye and studies the divided screens with his left. He recognizes guards Amanda has repeatedly employed and directs his men to their locations.
Her guards other than Asaka are neutralized, leaving her increasingly isolated. More guards should mean more protection; to Rum, familiar faces instead make them identifiable targets. The scene shows how observation can dismantle a defense before the intended victim fully understands the attack.
Memory Gives Him Power Beyond an Assassination
Amanda recognizes the wider use of his ability: gestures and habits can connect a disguised person with a known identity. Private conduct can then become compromising information about influential figures in politics or business.
Rum may give that relationship a more agreeable description, but its force lies in using another person’s vulnerabilities to control their choices. His threat is not confined to a gun or a single killing. He can see something once and use it much later to extend the Organization’s reach.
Both Eyes Existed, but Only One Retained the Ability
Rum possessed the special ability in both eyes when younger. By the hotel incident, only the left retained it even though both eyes were physically present. The right eye’s loss of that capacity is associated with age.
He later loses the left eye itself and now wears a prosthesis. His thoughts during a Kaitou Kid case about how useful that eye would have been suggest the missing advantage: comparing a disguised person’s behavior with remembered habits.
An interest in using APTX 4869 to restore the remaining eye’s earlier condition is a possible implication. It is not a confirmed successful treatment. Age-related decline, the later physical loss, and a hoped-for restoration are distinct stages; conflating them would make the theory sound more settled than it is.
What Did Rum Get Wrong?
Gin’s dismissive reference to the killing Rum mishandled seventeen years earlier linked him to the case before the full flashback. It also established that the Organization viewed the operation as a failure. Gin did not supply an itemized account of what had gone wrong.
Asaka’s survival is a clear failure of the attempt to silence witnesses. She knows the operation and its participants, remains hostile to Rum, and keeps the case alive in the present. The person he failed to eliminate has not ceased to be a threat.
Other possible failures include Koji’s message, the additional death of someone who was not the original target, Kuroda’s discovery of the bodies, information circulating online, and exposure of Rum’s appearance or abilities. Those consequences can help explain the failed operation, but the story does not confirm that every one is an item in Gin’s criticism or the boss’s judgment.
Koji, Asaka, and the Bishop She Keeps
Attraction Is Not a Confirmed Relationship
When Amanda comments on Asaka’s reserved manner, Koji openly expresses that he finds her attractive. The story does not establish that they were dating, or that Asaka had already returned his interest. At that point, it may have been one-sided.
His light remark becomes much heavier after he refuses to abandon her. The sacrifice gives the earlier attraction emotional weight without supplying an unshown romantic history.
The Bishop Is a Personal Keepsake
Before hiding Asaka, Koji entrusts her with his treasured shogi bishop as a good-luck charm. His accompanying proverb evokes a bishop watching from a distant position and waiting for an effective counterattack.
The object carries two meanings into the present: a connection to the case, and a gesture meant to help Asaka survive. Wakasa’s years of watching Rum can be read through that image of waiting for an opening. A small piece from the board has become a way of understanding the survivor’s long struggle.
Her harsh thoughts about Koji being a fool can likewise be read as grief and anger at his sacrifice rather than contempt. Gratitude may coexist with resentment that he left her alive while dying for her. The exact mixture is an interpretation, not a complete statement of her inner life, but the repeated response makes the loss feel unresolved.
Wakasa Keeps the Case Online
Wakasa is the person behind the recurring online information about the Haneda case. Keeping it available prevents the deaths from being forgotten and lets her observe interest in the incident. Conan’s and Professor Agasa’s investigation intersects with that trail.
The website does not establish a single exclusive reason for her move to Teitan Elementary School. Interest in Conan’s ability, Haibara, or an opportunity to approach Rum may overlap. Her online activity is a method we can identify without pretending it explains every part of her plan.
Kuroda’s Eye Is the Cost of a Rescue
Kuroda is a rescuer, not Rum’s accomplice. His imposing present appearance and damaged right eye initially invite suspicion, but the flashback gives those features a very different meaning.
He is ostensibly on leave to watch the chess tournament with a friend. At the time he serves in the National Police Agency’s Security Planning Division and has been assigned by a superior to contact Amanda. The precise agenda of their planned meeting remains unclear.
When Asaka attacks him, Kuroda reads her as an endangered survivor. Possible enemy influence beyond the hotel also makes simply handing her to local police a concern. He tries to get her to safety and hear what happened, continuing the rescue begun by Amanda and Koji.
The tracked trunk and collision explain his right-eye injury and lengthy coma. His later white hair and changed appearance belong to that history; they do not establish an identity swap or Organization membership. The feature that once made him look like a Rum suspect instead marks the harm suffered while helping Rum’s intended victim.
Tsutomu’s Investigation and the Akai Family
The Investigation Comes After the Killings
The Haneda family, who already knew Tsutomu, asks him to investigate Koji’s death. Shuichi identifies his father as the Akai family member directly involved in that inquiry. This does not put Shuichi at the original scene, or imply that the families first became acquainted only after Koji died.
Tsutomu’s inquiry leads him toward dangerous opponents. He warns his family to take refuge in Japan; the Black Organization is the strongly implied threat in context. Trying to keep them away from that danger leaves them with little information about the work that takes him from them.
Mary remains in contact with him for part of the investigation and asks whether he has identified Koji’s killer. Tsutomu later disappears. No body or confirmed death is established in the material covered here. Vermouth’s later appearance before Mary in his likeness is an imposture, not an answer about the real man’s fate.
The Memory of Tsutomu Protecting Asaka
Wakasa recalls Tsutomu telling her to stand back while he faces a dangerous opponent. The memory places him in contact with Asaka after the hotel events and shows him protecting her.
The opponent is identified as Rum in Volume 108, File 1150, where Rum recalls Tsutomu threatening his left eye. The full encounter, including its exact date, location, and outcome, remains unshown. The parallel with Koji protecting Asaka is painful; it does not establish that Tsutomu shared Koji’s death.
Shukichi Inherits the Haneda Name
Shukichi is Tsutomu and Mary’s second son, Shuichi’s younger brother, and Masumi’s older brother. He joins the Haneda family after high school to carry on Koji’s shogi dream, making Koji his elder brother by adoption.
That purpose does not reveal every detail of the adoption arrangements or the conversations that led to them. It connects the ambitions of a living player with the family of one who died young, while also joining two families affected by Tsutomu’s investigation.
What the Flashback Still Does Not Resolve
Rum’s missing left eye: He still has it during the hotel operation and uses a prosthesis in the present. File 1150 shows Tsutomu threatening that eye during their confrontation. It does not show the injury itself, so whether Tsutomu caused the loss remains unconfirmed.
Tsutomu’s fate: Whether he is alive remains unconfirmed; his disappearance establishes neither survival nor death. If he lives, his failure to return to his family needs explaining; if he died, the circumstances remain unknown. Vermouth’s disguise settles neither possibility.
Kuroda’s intended conversation: The contact with Amanda was assigned, but its full subject is not established here. Her intelligence and political connections invite theories; they do not supply the missing conversation.
The full extent of Rum’s failure: Asaka survives and damaging traces remain. Exactly which failures Gin and the boss counted against Rum is not completely stated. The consequences are visible even when the Organization’s own assessment remains incomplete.
The Hotel Incident Is Over; Its Consequences Are Not
The case begins with a plan to exploit Amanda and becomes a succession of choices to protect Asaka. Amanda sends her away, Koji hides her, and Kuroda tries to get her out. Amanda and Koji die by different immediate routes; Asaka carries what they did into her life as Rumi Wakasa.
The bishop is more than an identifying clue. It is something Koji personally entrusted to her, from a day when she lost both the woman who raised her and the man who refused to abandon her.
Rum may regard the incident as an old operation that went wrong. For Wakasa, its losses remain personal and unfinished. The flashback explains the deaths, but her pursuit of Rum and the unresolved fate of Tsutomu keep that past active in the present.
Further reading (contains spoilers): Wakasa and Wakita's seventeen-year feud.
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