Kotetsu ( () (てつ) Kotetsu?) is a young villager from the Swordsmith Village. His ancestors built the battle doll Yoriichi Type Zero.[3]


Kotetsu is a young man with unruly black hair, worn tied up in a low ponytail.

He wears a striped yukata and a Hyottoko mask (with notable eyebrows) that fully conceals his face. The kanji for Hyottoko ( (ひょっ) (とこ) Hyottoko?) is written on the back of his yukata.


Kotetsu is a kind and energetic child. He is full of passion for his job of maintaining the battle doll Yoriichi Type Zero, even though he has not yet mastered the repairs. This causes him much grief and fear but after meeting Tanjiro Kamado he realizes that he cannot give up.

He is often very frank and brutal at times. Despite this, he means the best and tries his hardest to help those around him. 



Swordsmith Village Arc

Abilities and Powers


  • Kotetsu's actual face bears a striking resemblance to his mask.
  • He is an orphan with no siblings.
  • He has an explosive temper.
  • He has amazing analytic abilities.



  1. Kimetsu no Yaiba Manga: Chapter 103 (Page 12).
  2. Kimetsu no Yaiba Manga: Chapter 103 (Page 4).
  3. Kimetsu no Yaiba Manga: Chapter 102 (Page 19).


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