Now split into three, the demons have driven Tanjiro into a corner. It is then that Nezuko attacks. Now that she's become a demon herself, she's no longer so weak that she needs protection. His mind made up, Tanjiro follows one of the demons into the swamp now spreading across the ground. Waiting for him there is...
Tanjiro leaves Nezuko to protect Kazumi and Tokie from one of the three while he jumps inside their black hole to deal with the other two. Inside it is like a black swamp, but the Water Breathing shows its true power when underwater, letting him unleash the full power of the Water Breathing, Sixth Form: Whirlpool that eviscerates the two.
Nezuko physically beats back the remaining demon, who thinks she must have gotten a huge amount of blood from "him" to be so powerful. However, her lack of experience makes her attacks easy to read and the demon begins to regain the advantage, when Tanjiro surfaces and disables him. Tanjiro orders the demon to tell him what he knows about Muzan Kibutsuji but the name terrifies the demon so much that he attempts a suicidal attack rather than speak and is killed.
Nezuko falls asleep and Tanjiro returns her to the box. Kazumi is in shock and shouts at Tanjiro when he tries to tell him to move on after his fiancée's death, though realizes after Tanjiro gives him Satoko's hairpin, smiling gently, that he's been through something similar and apologizes, promising to take care of the girl.
Tanjiro leaves, vowing to defeat Kibutsuji for the suffering he has caused. A Kasugai crow lands on his shoulder and directs him to Asakusa, Tokyo for his next mission, but Tanjiro finds Tokyo's size and electricity overwhelming.
While resting in a park he catches Kibutsuji's scent and chases it down, leaving Nezuko behind in his hurry. He locates Kibutsuji as he walks down a busy street and is about to draw his sword when Tanjiro realizes he's holding a girl who calls him "daddy." A woman walks up and asks what's going on and the girl in Kibutsuji's arms calls her "mommy." Tanjiro can smell the girl and woman are human - Kibutsuji is pretending to be one as well. To distract Tanjiro, Kibutsuji digs his fingernails into his palm to bloody them and casually slices the neck of a man passing by, turning him into a demon.
Characters in Order of Appearance
- While Tanjiro is fighting the two demons and they change directions quickly, you can see them write graffiti art in the sky at 6:13.