Episode 50

Aren't You Going to be a Hashira? (柱になるんじゃないのか?) is the 50th episode of the Kimetsu no Yaiba TV anime series, and the 6th episode of its third season.

Plot
Shocked to see Genya’s demonic appearance, Tanjiro becomes hesitant to approach him. Karaku yells out in agony over his opponent’s latest attack and his inability to seemingly heal, making Tanjiro realize that his effort to heal heavy damage have succeeded. However, Sekido is angered at the demon of pleasure’s loud cries, remarking that they are healing, only slower. Notices that Aizetsu had been beheaded, Tanjiro sees that decapitating even all four manifestations will not kill them, making it redundant to attack them. He frees Nezuko with his blade from being pinned by debris and they embrace in relief.

Even after knowing the scent of all four demons, Tanjiro remarks of his unsettling discovery of a fifth scent, knowing he must find it hidden in the battlefield. Genya suddenly grabs his throat and angrily yells for him not to get cocky, states he will kill the Upper Rank. He claims that him having assistance with Upper Six is why he is not a Hashira; as Tanjiro asks what had happened to him and to ease his grip, Genya tightens his hold and declares that he will become a Hashira.

Instead of being hurt, Tanjiro happily states that he and Nezuko shall support him on his journey and tells him that a fifth demon is hidden somewhere. Genya refuse to believe him and think that Tanjiro is getting him to lower his alertness, only to see his bright shining eyes and realize he is being honest. He suddenly pushes Genya aside as lightning begins to strike around them, as Sekido, Karaku, and Urogi have now fully regenerated. Tanjiro asks him to go with Nezuko and engage the clones as he heads away from them and attempts to search for the fifth demon. Genya fires at Urogi while Nezuko battles Karaku, who unleashes a wind gust that nearly hits Tanjiro.

Thanks to the wind attack, Tanjiro’s nose clears of the smell of the village hot springs, enabling him to utilise his sense of scent once again. Concentrating on the fifth demon’s, he triangulates it to be somewhere in the bushes nearby, where a tearful and frightened Hantengu is hiding, reassuring himself that his emotion manifestations will kill the Demon Slayers. Tanjiro calls to Genya and heads to the forests to find the demon; Sekido sees him and orders Urogi to intercept the Demon Slayer. Now fighting the demon of joy, Tanjiro yells at Genya to head northeast, as the demon is hiding low.

Sekido then summons lightning around the two, causing them to stop in their tracks. As Genya runs to the forest, Tanjiro calls to Nezuko to assist him by attacking Sekido to stop his lightning. Urogi then flies upwards as Karaku appears behind Tanjiro, summoning a gust of wind and sending him flying; he grabs onto a tree stump and stabs the ground to anchor himself from being blown away. The demon of anger prepares to summon his lightning but Nezuko rushes at him to attack, but she is impaled by Aizetsu’s yari, stopping her.

Gyokko asks the trapped Mist Hashira if he feels pain, as Muichiro futilely attempts to stab through the water pot. Seeing the struggling boy’s life ending, Upper Five becomes excited and remarks that his creativity is rising at the sight of Muichiro’s struggle.

Aizetsu pins Nezuko to a tree and demands she doesn’t struggle; he calls to Sekido to shock her but the demon suddenly sees his khakkhara-wielding hand severed, with Tanjiro using his red blade. Sekido notes that Tanjiro is not only faster than before but stronger than what Muzan had described, watching as he slices Urogi’s right wing and mouth with ease. Nezuko grabs Aizetsu’s head and pulls herself through his yard’s shaft, before tackling him and seeing the demon of sorrow ablaze. As Tanjiro tries to slash Karaku, the demon of pleasure pins him with a gust of wind. He moves his attention to Genya in the forest but finds his arm severed unexpectedly by Tanjiro, who calls to Genya to head right and south.

Genya sprints through the forests but struggles to locate the demon, wondering whether it is hidden with a Blood Demon Art. Karaku kicks Tanjiro in the stomach but he twists himself upright and yells at Genya to move to the right, with the demon on the ground. He looks down and sees the fifth demon hiding in the vegetation; Hantengu had shrunken down to now be as small as a mouse. Shocked and in disbelief that the little demon controls the clones, Genya pursues him as he angrily notes that the entire battle had been a hunt just to find him hiding whilst battling the four powerful manifestations. Now understand how it had killed so much people, he swings his blade into Hantengu’s neck but watches as the blade snaps in two despite its thin neck.

Stunned, Genya fires his shotgun at the demon and hits him square in the back, only to see the demon is unscathed despite taking the full impact of his pellets. In disbelief at Hantengu's durability, Genya senses something behind as Sekido suddenly appears, preparing to stab him with his khakkhara. Freezing in the moment, he realizes he cannot dodge the incoming blow and is unable to regenerate his neck. Seemingly in his last moments, Genya thinks of his older brother Sanemi; he had wanted to become a Hashira to be acknowledged by him, so that he could apologize for a moment in their pasts.

Genya recalls his past: his mother was a petite woman who worked tirelessly from day to night. Her husband and Genya's father was much bigger, with an abusive personality as great as his size. He was loathed so much, he was killed in a stabbing. Genya's father often hit him, his siblings, and his mother, using his size to torment them. Despite her much smaller frame, Genya's mother never failed to protect them. One night, as he and his siblings laid in bed to sleep, Genya remained awake and noted that she was late to come home. Sanemi, also unable to sleep, decided to look for her, whilst he stayed behind to watch his younger siblings. Thought Genya wanted to tag along, Sanemi reminded him of his promise. As he left, their siblings all then woke up.

They too became worried as their mother had never been so late, dawn was approaching. Genya asked them to go back to sleep, hoping to ease their concerns. Without warning, a loud thud rings from the front door and Genya's siblings quickly ran to greet their mother. But seeing a strange figure behind the window, he warned them against opening the door as it might not be their mother. The door then breaks open and the figure speeds into the house, killing four of his siblings instantly. It then slashes Genya's face and leaps into the ceiling, shattering the ceiling lamp and rendering him unable to see their assailant. Thinking it is a wolf, the figure lunges at him, only to be tackled by Sanemi out of the house.