Musical Chairs

Synopsis
While waiting for the next experiment, Batta struggles with having killed civilians for hers and Fugō's survival, and rebuffs Yatsume's attempt to comfort her. She also clashes with Shamo, and chides Boruto when he tries convincing her of the importance of cooperation. Kiseru doesn't judge her, but warns against trying anything against him, showing off his Fire Release. She mocks him for showing his hand, Namua and Boruto having to calm him down. Yatsume shares her dream of finally changing her hair colour if she survives, and asks for others dreams. Boruto wants to emulate his master. Shamo wants to make his grandmother happy. Namua has no dreams, and Rokuro recognises the tattoo on his arm as a prison tattoo. Namua recounts his criminal past, having killed and stolen so much he became paranoid about becoming the next victim. He changed his life after meeting a priest he couldn't bring himself to kill, becoming an ascetic. Fugō wants to deliver a payment to his client, his company's fate at stake. Batta refuses to share her story, but Yatsume notes her use of "need" instead of "want" when she mentions money, so she claims she needs money to buy a beach island. Kiseru wants to soak on hot spring on his mountain village, near the border with Takigakure. Ōga arrives, and Kiseru picks the next experiment, "Pressure", which Ōga finds the harshest yet. Sarada returns to Konoha, meeting Kawaki, Mitsuki having stayed behind to investigate the scene. She is investigating everyone who bought tickets to the same Thunder Train to see if anyone suspicious was aboard with Boruto. Namua finds bloodstains on the experiment room, agitating Shamo, which irritates Kiseru. Shamo finds and presses a switch causing the ceiling to come down on them. Yatsume readily tries blocking it with her Lightning Release chains, but they break. Boruto's Rasengan also has no effect. Rokuro asks what Shamo did, and he explains he tried turning on the lights. Boruto notices other switches on other walls, but each one pressed makes the situation worse, causing moving saws and spikes to appear. One of them retracts the saws, but the ceiling spikes remain. Batta and Fugō argue against pressing the last switch, but taking Ōga's behaviour in consideration, Boruto thinks he wouldn't end them like this, and presses it. Depressions appear on the walls, where they can hide from the ceiling spikes. Fugō overtakes Shamo, Rokuro fights Kiseru, Boruto lets Yatsume have one spot, as thanks for saving him in the first experiment and because she injured herself when her jutsu failed to stop the ceiling. Namua observes the ceiling. Kiseru's Fire Release endangers the others, but Boruto puts it out with his Water Release. He notices the water drains away, and determines there must be space below the floor. Boruto and Kiseru try breaking through the floor, while Shame tries holding the ceiling with his earth wall. Namua joins Boruto and Kiseru. Batta needs to kill Yatsume to take her spot, who wants to know the reason for her death if Batta indeed kills her. Batta confesses she needs the money to buy back her birthplace from rich people who bought it for resort development. Boruto convinces her to help by arguing it'll go against playing into Ōga's hand. She helps Boruto find the weakest spot on the floor for Boruto to strike, comparing it to diamond cutting. The extra space is enough so no one dies from the ceiling coming down. Ōga congratulates Boruto, as it'll make the next experiment more interesting, and lets them return to the break room. Batta bumps into Kiseru as he leaves. Fugō checks on his briefcase contents, not money, but a family photo and a canteen. Batta confides in Boruto that Ōga might have another minion among them, revealing a working communication device she swiped from someone else, who kept it hidden instead of trying to use to contact anyone outside. He is surprised when she whispers who had it. Sarada discovered five passengers with unclear backgrounds, and comparing it to Konoha's records, she and Kawaki discover one of them was a Kara Outer, Kiseru.