12. Bölüm: Kazuma, Ōba ile yüzleşirken Toshihiko, Jin Kakinoki'yi kendi yanlarına katılmaya ikna eder.

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While Toshihiko tries to convince Rie's stepfather to join his battle against Ōba, Kazuma rushes to fight him by himself. During his travel to the building, it is revealed he "ate" Knife he begged to kill him. And later tries killing another member, but halts as his friend informs him that the "medicine" Ōba gave him turned many humans into Shokujinki and that possibly he's still suffering from the dosage. He also reveals that Rie went to Ōba's building hoping to help get the Kifūken back, thats when Kazuma leaves to find her. Unfortunately for Toshihiko is not having much luck with Rie's stepfather Jin Kakinoki, who's completely broken from the past and influence with Ōba. Just as Kazuma enters the building he finds a badly injured and defeated Rie. She apparently dies and this causes Kazuma to lose control again and he transforms and devours her body. He's shocked by what he's done but is still hellbent on revenge and tries to kill Ōba. Only to fall into a trap set by Ōba, who has his arms removed and they become attached to his legs. Toshihiko and the group come in, after convincing Jin to aid them. But to his shock, Kazuma dies and in his arms. And the final battle ensues between him and Ōba. (Source: Wikipedia)