Episode 48

Thank You, Tokito (時透君ありがとう) is the 48th episode of the Kimetsu no Yaiba TV anime series, and the 4th episode of its third season.

Plot
Despite beheading the fish demon, Muichiro watches as its head grows back completely. He notices the vase on its back and slices through it, finally killing the demon and confirming his suspicions that it was a Blood Demon Art. Looking to his rescuer, Kotetsu holds onto Muichiro tightly, thanking him for saving his life and apologizing for insulting him, which the Hashira does not know what he is talking about. As the smith takes back his hatred of him, Muichiro tries to move on and walks away, but Kotetsu begs him to save Kozo,currently under attack. He also explains that Hotaru has been polishing a blade day by day continuously alone and begs him to save them.

Muichiro initially attempts to ignore him but suddenly remembers something that Kagaya Ubuyashiki had said to him: "You will definitely get yourself back, Muichiro". He remembers when he was visited by the Corps leader and his wife as he lay in recovery from a demon attack. Kagaya, noticing the boy’s confusion, tells him to only think about surviving, and that as he stays alive, his lost memories will come back to him in time. The leader informs Muichiro to not miss the opportunity, as even trivial events can trigger it to eventually clear his mind.

Taking Kagaya's words in, Muichiro hoists Kotetsu on his shoulder and speeds through the forest, much to the young swordsmith's fright. As he runs, he wonders if he is making the right decision, since moving to save Kozo and Hotaru will jeopardize the village’s protection. Nonetheless, he reaffirms that he can succeed, as he is the Mist Hashira of the Demon Slayer Corps.

As the winged demon’s head attempts to summon another sonic shriek, Tanjiro slices it in half to stop the attack. The halves instead form new mouths and fire at Tanjiro who is stunned by the attack but realizes that it had weakened, indicating that the four demons share a certain amount of power. He notices that etched onto each demons’ tongue is an emotion; the demon he is facing is the demon of joy. He stabs through the halves of flesh but the winged demon appears again and launches the sonic attack, though the Demon Slayer dodges in time, before he then sees that the demon flesh on his sword has vanished.

The demon circles back to swoop down and slash the Demon Slayer’s left shoulder. He flies down again and cuts his right shoulder, before attacking again and kicking him against a tree. Tanjiro is soon slashed on the forearm, shoulder, thigh, and chest as the demon continues his rapid assault. The demon swoops once more and cuts his back, but Tanjiro is able to cut through his head simultaneously. It slows down and heals as Tanjiro sprints at him, forcing the demon to prepare another sonic strike. Tanjiro succeeds in cutting through its head to stop it and the winged demon falls to the ground, though it regrows its lost half and takes flight once again. Realizing he is unable to help them at the moment, Tanjiro begs Nezuko and Genya to stay alive.

As Nezuko wrestles with Karaku, Genya struggles to move with a yari in his chest. Sekido angrily orders the demon of pleasure to quickly rip her limbs off, but Karaku intends to enjoy his scuffles and instead tells the demon of anger to help Aizetsu. The demon of sorrow complies to kill Nezuko but cannot pull his yari out, giving Genya the chance to shoot him, blowing back his head. Sekido is angered at Aizetsu’s slow thinking as the headless demon pulls his yari off of Genya, before quickly healing his head and neck. Despite Aizetsu believing his wounds would kill him, Genya unexpectedly begins to recite the Amida Sutra, leading Sekido to demand the Demon Slayer's head split in half.

Aizetsu begrudgingly complies and swings his yari down, but to his shock, he misses completely. Genya suddenly appears behind him and tries to slice his neck, only to be shocked by Sekido's electricity. Struggling to pull the trigger of his shotgun, he musters the strength to aim at Sekido and fires, severing the demon's right hand. The demon of anger refuses to believe Genya is still alive despite his wounds from Aizetsu, whothen swings his yari and slams the shaft into Genya's chest, sending him through a room.

Having had his fun, Karaku drives his foot through Nezuko and impales her torso, before telling Sekido to impale her with his khakkhara once he has ripped her limbs and repeatedly shock her till she is immobilized, to which the enraged Sekido responds that it was his original intentions. As he tries to rip off her hand, Nezuko kicks Karaku in the jaw and partially severs his neck, before ripping her hand away. The demon of pleasure heals his neck but is sprayed in her blood, allowing her to use Exploding Blood and set him ablaze. Twisting his hand off, Nezuko uses the uchiwa on the distracted Karaku and blasts him away with a gust of his own wind. She attempts to repeat the move with Sekido but the demon swats the uchiwa away with his khakkahara and stabs her in the neck, before summoning his electricity and shocking her in place.

Still unable to fend away the winged demon, Tanjiro sustains a cut to his cheek. Notices the building with Genya and Nezuko is close by, he thinks of a plan but dissuades himself against it, yet he cannot find an alternative. As the demon swoops down, Tanjiro slashes at his feet but misses, before ducking down to avoid the claws. He begs Nezuko and Genya once more to stay alive, hoping to assist them. Elsewhere, Aizetsu approaches the seemingly unconscious Genya but sees him continuing to repeat his sutra. Asking just who he is, the Demon Slayer replies that the name of the man who will kill him is "Shinazugawa Genya".

Intending to use the demon's momentum to help him reach Nezuko and Genya, Tanjiro runs to the building and lures the demon of joy in. As he swoops down to slash him with his claws, the Demon Slayer ducks down and lunges at the demon as it slows, piercing through his leg and mouth. Despite the demon clawing at his back, Tanjiro fights the pain and sees that the demon's body is light in order to fly. Using his blade to steer, he guides himself back to the building and punches through the wall with the demon's body, where he sees Nezuko being shocked by Sekido, who is surprised to see both Karaku and the demon of joy, Urogi, defeated.

Characters in Order of Appearance

 * Muichiro Tokito
 * Kotetsu
 * Urogi (Joy)
 * Tanjiro Kamado
 * Karaku (Pleasure)
 * Nezuko Kamado
 * Genya Shinazugawa
 * Sekido (Anger)
 * Aizetsu (Sorrow)
 * Mitsuri Kanroji