Black Suitcase

The Black Suitcase is a locked bag whose sudden appearance aboard the train brings Nanao to a decision point: rather than keep carrying it while evading Tangerine, he tries to surrender it to a conductor. The scenes make the suitcase important less through any confirmed account of its contents than through the limits of what Nanao knows, the conflicting locations he gives for finding it, and the handover that accompanies his declared intention to quit the job.

The suitcase and the limits of what is known

Nanao tells Tangerine that he found the bag on a luggage rack in the gangway and that it had not been there before. He cannot say what is inside: he does not know the combination, and says he did not know the contents to begin with. The conductor who later receives it also finds it locked when he tries the clasp. These details establish a practical barrier around the object. Nanao can pass the suitcase on, but he cannot open it or verify what it contains.

The account does not resolve how the bag came to be on the rack. Nanao describes it as having appeared there, while the evidence supplies no further explanation of its movement. Its arrival is therefore reported as an observation rather than explained as a discovery with a known cause. That uncertainty matters to the handover: Nanao considers the possibility that it could be a trap, yet proceeds with giving it to railway staff.

Nanao’s attempted handover

The narrative first presents the episode through a telephone call: Tangerine answers an unfamiliar number and hears Nanao say that he has found the bag. The account then rewinds to Nanao approaching a conductor in the gangway between cars eight and nine. A narrow door marked Crew is on the right; a conductor steps out as Nanao approaches, and the two nearly collide. Before he can change his mind, Nanao thrusts the suitcase forward and asks the young conductor to take it.

When the conductor asks whether Nanao wants him to take his luggage, Nanao gives a different account of where it came from. He says he found it in the bathroom, specifically in the gangway between cars five and six. The narration identifies this as a lie: it does not match the gangway luggage-rack location Nanao reports to Tangerine. The conductor appears not to suspect the discrepancy. He turns the bag around, tests its clasp, finds it locked, and says he will make an announcement about it. Nanao thanks him and moves on, leaving the suitcase in the conductor’s care.

The suitcase in Nanao’s decision to quit

After the transfer, Nanao continues through the green car and into the next gangway, which connects it to car ten at the end of the Hayate Shinkansen. He is still thinking about the Wolf and the Hornet and their possible connection. He then calls Tangerine and explains that he is ready to give up, that he has handed the bag to the conductor, and that he suspects the Hornet may have killed Minegishi’s son. He also reports that a man in the back of car six has a photograph of the Hornet in his pocket. Tangerine hangs up after hearing his explanation.

Nanao’s stated reason for surrendering is that he does not think he can keep dodging Tangerine on the train. He would rather stop worrying about being killed, have Tangerine retrieve the bag, and go to the back of the train. Nanao says he will get off at Sendai and be finished both with Tangerine and with the job. The suitcase’s transfer is thus not simply a change of custody: it is the concrete step Nanao associates with abandoning his assignment and ending the pursuit.

Narrative role and unresolved status

The call and the rewind give the handover two distinct views. In the call, Nanao summarizes the suitcase as a bag that has appeared on a rack and says he has turned it over. The subsequent scene shows the actual exchange, including his false explanation to the conductor and the conductor’s inspection of the locked clasp. The difference between Nanao’s account to Tangerine and the story he gives railway staff is explicit; the reason for the lie is not explained here.

At the end of these passages, the suitcase has been accepted by the conductor, but its contents remain unknown to Nanao and its eventual disposition has not yet been established. The conductor’s promise to announce the found luggage offers a route for its return, while Nanao’s call frames the handover as a way to disengage from the job. The object therefore remains both a physical problem—a locked bag whose contents cannot be checked—and a turning point in Nanao’s attempt to withdraw from the danger surrounding it.