A Sword from Over 300 Years Ago
Yoriichi Type Zero is destroyed at the end of Tanjiro's training, but a sword from over 300 years ago appears from inside. Kotetsu gives Tanjiro the sword. However, it is badly rusted. At that moment, Haganezuka appears and takes the sword with him to perform a grueling whetting process handed down within his family line. Meanwhile, the presence of demons is inching closer to the village...
Aired 23/04/2023EP 3 - A Sword from Over 300 Years Ago

Demon Slayer: Kimetsu no Yaiba Swordsmith Village Arc
Tanjiro’s journey leads him to the Swordsmith Village, where he reunites with two Hashira, members of the Demon Slayer Corps’ highest-ranking swordsmen - Mist Hashira Muichiro Tokito and Love Hashira Mitsuri Kanroji. With the shadows of demons lurking near, a new battle begins for Tanjiro and his comrades.
Notes:
• The first episode has a runtime of ~49 minutes, and received an early premiere in cinemas worldwide as part of a special screening alongside the final two episodes of Kimetsu no Yaiba: Yuukaku-hen.
• The final episode has a runtime of ~52 minutes.