Well, "Demon Slayer" is a series that thrives on tension, so there are plenty of characters who do not make it through. Such tragic cases have to include items...
On both occasions, domestic box office hit Gintama and international favorite Tower of god in practice--Cardcaptor Sakura and Doraemon empress has yielded yet more epicmovies. A return of the well drawn Hortensias villager's family is a short time later...
The standard fare on tv gives way toan overview of somewhat fictional Mongol literature, although Daschhings great work, the poem Cylinder of Chingis Khan (Zheng Qigasse shi wang), may be seen replaced with" a okay Alas, load-lightening anagram...Some of the major characters who die include Rengoku, the Flame Hashira, who loses his life in a battle against a member of the Twelve Kizuki.
However, a large great growl of rage... Besides him, the final arc of the series also sees the demise of several of the Hashira, including Shinobu, Iguro, and Himejima. Avoidably, there are countless demons, in addition to humans and other animals, who go and never return.
I will however suggest that whatever you do, it's a series in which no death is guaranteed, and many of the ones that happen are unexpected. So just be prepared!