Episode 12

The Boar Bares Its Fangs, Zenitsu Sleeps (猪は牙を剥き 善逸は眠る) is the 12th episode of the Kimetsu no Yaiba TV anime series.

Synopsis
Tanjiro and Zenitsu end up getting separated inside the mansion, where the rooms rotate each time the tsuzumi drum is played. Without Tanjiro, Zenitsu is overcome by fear and despair, but he must protect Shoichi. Meanwhile, Tanjiro encounters the demon, the master of the mansion, playing the tsuzumi drums, and also a strange-looking man wearing a boar hide.

Plot
The unknown Demon Slayer prepares to attack the Drum Demon, charging at the creature with his dual Nichirin Swords. In retaliation, the demon taps a tsuzumi, causing the room to turn sideway and evade the attack. As it does, Teruko lands hard on the upside down ceiling. Tanjiro instructs her to hold onto furniture but is hit by the masked stranger using him as a springboard to leap from. Annoyed, he tells them to focus on the demon, not his own reckless attacks.

The demon taps its drum twice, spinning the room right-side up again. Teruko lands on the floor but is stepped on by the masked Slayer, finding enjoyment in the rotating rooms. Seeing this, Tanjiro angrily grabs their leg and flings him away, cursing him for hurting a little girl. In response, they claim no person has ever thrown them like that and attacks Tanjiro with his swords. As he backs away, Tanjiro wonders why he is being challenged by a Demon Slayer. The stranger tells him his swords will hurt him, as they rip flesh like he wants them to. Tanjiro tries to remind of the actual threat of the demon but they charge at him regardless. Infuriated by their presence, the Drum Demon taps the tsuzumi of their stomach, causing giant gashes to appear in front of Tanjiro and the masked Demon Slayer.

The demon begins to attack and rotate the rooms simultaneously; as he spins, Tanjiro begins to see the pattern between the tsuzumis and their respective movements. But as he begins to get used to them, the demon begins uttering something, causing the rooms to change instead. Losing track of the demon in a new room, Tanjiro suddenly detects the scents of multiple demons in the mansion. He then detects the smell of blood; he opens a nearby door, looks into the hallway and finds a corpse. Shocked to find another lost life, he leads Teruko to the other direction. While making their way down the hall, he detects a new scent; Tanjiro opens the door and finds the children's lost older brother, holding a tsuzumi.

Elsewhere, a terrified Zenitsu holds his companion Shoichi's hand at they would through the dark hallways. Already on edge, he becomes more scared when the boy suddenly asks him a question. He angrily scolds him for causing him a fright and for not signalling when he was about to speak, claiming he would be branded a murder for causing his heart to leap out of his mouth. Shoichi, tired of dealing with Zenitsu's fright, mentions he has been shivering and sweating for some time now. He says that him being fearful in turn causes him to be nervous; apologetic, Zenitsu exclaims they need to be quiet so as to not attract demons, though yells while doing so.

Suddenly, Shoichi looks at something behind the Demon Slayer and becomes scared. Zenitsu turns around and sees an approaching demon, excited to see them. They run away but the monster pursues; he claims that they taste bad but the demon wants to taste them first, using its long tongue to attack. They are followed to a room, bursting through the wall while doing so. Zenitsu begs the child to make a run for it, claiming his fear is now in his knees. Despite not wanting Shoichi to die young, he struggles to find the courage to fight. The demon then enters the room with them, fear finally overwhelming Zenitsu and knocking him unconscious. Shoichi is stunned to see the Demon Slayer asleep, now cornered by the demon. The demon uses its tongue to try and grab him as the boy desperate yells for Zenitsu to wake up, causing his hand to twitch slightly. Without warning, the demon's tongue fall off at the tip. As the demon becomes shocked by the sudden pain, Zenitsu stands up, to the demon and Shoichi's wonder.

The Demon Slayer takes a stance and begins to breathe; the creature confused confused at the unexpected and strange sound but notes that he feels different now. Zenitsu unlatches his sword and uses Thunder Breathing, First Form: Thunderclap and Flash, speeding forward at lightning-fast speeds and decapitating the demon instantly. After his strike, he suddenly snaps awake again, just as the defeated demon's head rolls next to him. He reacts with terror and sees the demon is already dead, believing and thanking Shoichi for defeating the demon

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Эпизод 12