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...
But we only found it
 because you came here!
!لكنّنا وجدناه فقط لأنّك أتيت إلى هنا
Aber ohne deinen Angriff
hätten wir es nie entdeckt!
La encontramos
porque le asestaste un golpe.
La encontramos gracias a tu golpe.
C’est grâce à toi qu’on l’a trouvé !
तुम्हारे यहाँ आने की वजह से ही
हमें यह मिली!
Se non c'eri tu a dare quel colpo, 
mica l'avremmo trovata!
Mas só descobrimos porque você veio aqui!
Мы нашли её благодаря вашему удару!