As Tokitou is running past a Kotetsu about to be killed by a mutant fish demon, he remembers Tanjirou’s words about helping people coming back to help you, so he spares a few minutes to take the fish out. Kotetsu rides along as Tokitou heads back to the main battle.
Tanjirou is also isolated by the winged fragment of Hantengu. He gets hit by a sonic attack, but he learns that when he chops the demon up, their individual attacks grow weaker. The demon’s talons are a problem, but Tanjirou is hanging in there.
He’d really like to get back to Nezuko and Genya, who are dealing with the other three fragments of Hantengu: anger, pleasure, and sadness. Genya manages to knock off the Sad one with a combo of his shotgun, sword, and staunch refusal to die; he’s a tough cookie.
And then there’s Nezuko, who kicks the shit out of Pleasure and burns him with her blood. It’s great to see Nezuko actually fighting and doing a pretty good job of it. Her attacks and acrobatics are certainly some of the prettiest of the show, but she suffers a setback when Anger stabs her in the throat and starts hitting her with electricity.
Tanjirou finally uses Joy’s flight ability to his advantage, correctly deducing that the demon must be super light. He skewers him through the face and basically uses him as a glider to get back to the building where Nezuko and Genya are flagging.
Once back in the building, he slices off Joy’s foot and uses it to deflect Anger’s lightning, then slashes Anger’s tongue to buy time to free Nezuko. Anger nearly stabs Tanjirou in the throat, which would have been unpleasant, but Nezuko manages to stop the thrust with her immense strength.
Joy then swoops in and hits them with his big leaf fan thingy, which is essentially a wind and gravity-based attack that disables both Nezuko and Tanjirou. The timing of this is bad, as a huge horde of those mutant fish demons start to invade the village, whose swordsmiths are far better at making weapons than wielding them.
It’s fortunate, then, that Mitsuri was not stationed far from the village, and thanks to her crow, is on her way to spell Tanjirou, Nezuko, Genya, and Tokitou. She comes with a full head of steam and her trademark positive attitude, a ray of sunshine who will surely turn the tide.