Katana Man reveals he works with the Gun Devil’s minions . Himeno offers herself to Aki (rejected). She then makes a contract with the Ghost Devil to fight Katana Man. In a desperate move, she sacrifices everything — including her own body — to summon the Ghost Devil’s full power. She seemingly dies. Denji, enraged, transforms and kills Katana Man — but is shot by Sawatari.
Days pass. Starvation and madness set in. Power tries to kill Denji but fails. Finally, Denji challenges the Eternity Devil alone, hacking at it for three days straight until the devil begs for death. Denji kills it. The team escapes. That night, Makima kisses Denji — the first real affection he’s ever received.
Here’s a concise text covering the key plot points of the anime (Season 1, Episodes 1–12), based on the manga by Tatsuki Fujimoto and the MAPPA adaptation. Chainsaw Man – Episode Summary (Season 1) chainsaw man episodes
A new devil hunter, Himeno (Aki’s partner), is jealous of Makima’s hold on Denji. She gets Denji drunk and tries to sleep with him, but he passes out. The next day, they hunt the Katana Man (a human with a sword-blade head) and his partner, the Sawatari (with a snake devil). The attack is an ambush — Aki is stabbed, Himeno loses an arm, and Kobeni’s partner is killed.
Denji is saved by Power (who donates her blood) and Aki (who makes a new contract with the Curse Devil — using his lifespan as payment). Denji fights Katana Man again, now fused with the Gun Devil’s flesh. With help from Aki’s sword and Power’s hammer, Denji defeats him. Sawatari is killed by a mysterious figure: Angel Devil . Katana Man reveals he works with the Gun Devil’s minions
Denji and Power are nearly executed by Kobeni and Arai (from Division 4’s special squad) for breaking rules, but Makima — Denji’s mysterious, emotionless superior — intervenes. She offers Denji a new deal: obey her orders, and she will grant his next wish. Denji’s wish? To live a normal life with food, a bed, and a girlfriend.
Aki, Power, and Denji form a squad under Makima’s orders. They visit a village where a devil is turning people into dolls. They meet Beam (a shark fiend) and Prinz (a spider devil) — allies. The Doll Devil reveals she serves a powerful devil called the Darkness Devil . The group is transported to Hell. In a desperate move, she sacrifices everything —
Denji, a teenage devil hunter, lives in crushing poverty with his chainsaw devil partner, Pochita. To repay his yakuza debt, Denji hunts weak devils. Betrayed by the yakuza (who made a contract with a zombie devil), Denji is killed. Pochita makes a contract with him, becoming Denji’s heart. Denji revives as the Chainsaw Man — able to sprout chainsaws from his arms and head. He slaughters the zombies and is recruited by the government’s Public Safety Devil Hunters.