Episode 12, Chainsaw Man Wiki

Katana vs. Chainsaw (日 (に) 本 (ほん) 刀 (とう) VS (バーサス) チェンソー, Nihontō Bāsasu Chensō?) is the twelfth episode of the Chainsaw Man anime series. Akane sends the "Ghost Devil" after Aki, and he's nearly killed before the "Ghost Devil" stops and hands him a cigarette with a message from Himeno. The words inside give Aki the strength to kill the "Ghost Devil" and capture Akane. Meanwhile, Denji heads into his rematch with Samurai Sword. With a pull of the starter on his chest, he transforms into Chainsaw

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