Why does Haganezuka wear that mask in demon slayer (sword Smith arc)? - Quora

Hotaru Haganezuka, Wiki

Hotaru Haganezuka, Kimetsu no Yaiba Wiki

Kotaro Haganezuka without his mask (art by @harusame_0986) : r/KimetsuNoYaiba

Why does Haganezuka wear that mask in demon slayer (sword Smith arc)? - Quora

Why does Haganezuka wear that mask in demon slayer (sword Smith arc)? - Quora

Hotaru Haganezuka - Anime Superior

Why does Haganezuka wear that mask in demon slayer (sword Smith arc)? - Quora

Why does Haganezuka wear that mask in demon slayer (sword Smith arc)? - Quora

Did Obanai Iguro from Demon Slayer wear the mask around his mouth simply because he did not show his cut mouth? Or was there other reasons why he kept it hidden?

Since Tanjiro throws his sword into the forest at the end of Mugan train, does he use Rengoku's sword after that? I saw some fan art of it and thought it would

How did all of Tanjiro's swords break? - Quora

Did Obanai Iguro from Demon Slayer wear the mask around his mouth simply because he did not show his cut mouth? Or was there other reasons why he kept it hidden?