
The 159th chapter of Chainsaw Man, titled Attack on Samurai, falls within the Aging Devil arc. A captor lingers over Denji's torture while Yoru fends off Katana Man and the Nail Fiend, shielding Fami from their blows.
Trapped inside the facility, Haruka releases Akoku and Nobana from any obligation to stay at his side, yet Akoku has nowhere else to go and Nobana simply cannot locate a way out. A door he mistakes for an exit instead opens onto a holding cell crammed with pseudo-Chainsaw Men, and the man supervising Denji's torment is waiting beside it. He muses over the unexplained pattern of who mutates and who stays human, floating theories ranging from devotion to Chainsaw Man to Devils hiding within the Church.
The captor opens up about his own wife, a gentle woman who prepared his lunches yet still transformed, while his unpleasant neighbor was spared. When Asa presses him on whether he is being truthful, he confesses to a roughly six month affair that he insists barely counted. Yoru, realizing the man is merely stalling, shoves Fami clear of an incoming swing from Katana Man and continues to guard her against the Nail Fiend as the clash escalates.
Haruka frees Akoku and Nobana from following him, exposing how lost each of them feels. The supervisor of Denji's torture appears and lays out the rumors about who becomes a pseudo-Chainsaw Man, citing his transformed wife as a puzzle he cannot reconcile with his own marital betrayal.
Yoru reads through his stalling tactic and intervenes, kicking Fami out of harm's way and saving her from Katana Man. The Guillotine Devil appears shaken by the blow and pulls back, drawing scorn from the Famine Devil. The Nail Fiend then targets Fami, but Yoru repels her too, bloodying her nose and trading taunts about fighting with a single arm.
This installment ran on March 20, 2024, and is collected in Volume 18. It continues the Aging Devil arc, following Chapter 158 and leading into Chapter 160. The Japanese title reads Atakku on Samurai. Denji appears only as a referenced, dismembered figure rather than an active participant, while the spotlight sits on Yoru defending Fami.

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In Chapter 159, the man supervising Denji's torture stalls Asa's group with talk about who becomes a pseudo-Chainsaw Man, while Yoru shields Fami from blows by Katana Man and the Nail Fiend. Denji appears only as a referenced, dismembered figure.
In Chapter 159, the captor muses over the unexplained pattern of who mutates and who stays human, floating theories from devotion to Chainsaw Man to Devils hiding within the Church, and cites his own gentle wife transforming while his unpleasant neighbor was spared.
Yoru realizes the supervisor is merely stalling, so in Chapter 159 she shoves Fami clear of an incoming swing from Katana Man and continues guarding her against the Nail Fiend as the clash escalates.
In Chapter 159, the Nail Fiend targets Fami, but Yoru repels her too, bloodying her nose and trading taunts about fighting with only a single arm.
Chapter 159, Attack on Samurai, ran on March 20, 2024 and is collected in Volume 18. It continues the Aging Devil arc, following Chapter 158 and leading into Chapter 160.
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