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 are inching closer to the village...
and I just happened to be there
when it broke! So no!
!وصادف أنّني كنت هنا عندما انكسرت! لذلك لا
Mein Angriff hat das Fass
nur zum Überlaufen gebracht!
Solo fue una coincidencia
que se haya roto ahora con el mío.
Que lo haya roto yo
ha sido pura casualidad.
à force de recevoir des coups,
c’est tout !
और यह संयोग है कि इसके टूटते के समय,
मैं यहाँ मौजूद हूँ! इसलिए नहीं!
quindi la mia è stata solo fortuna! 
È un caso che sia successo quando l'ho colpita io!
e aconteceu de eu estar lá 
quando quebrou, então não!
оттого что изнашивалась долгие годы!