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...
Don't lose your nerve!
This is a demon who's murdered tons of people!
!لا تتهاون! هذا شيطان قتل العديد من النّاس
Lass dich nicht täuschen! Dieser Teufel
hat unzählige Menschen gefressen!
No te dejes engañar.
Es un demonio que ha matado a muchos.
No te alteres. Ha matado a mucha gente.
Je ne me laisserai pas avoir,
il a tué des tas de gens !
डरो मत!
Non farti influenzare! È un demone 
che ha ucciso un sacco di persone!
Não hesite! É um demônio 
que matou muitas pessoas.