Demon Slayer is getting a chapter showing life after the mainline

Demon Slayer: Kimetsu no Yaiba—Corps Records is a new book with character information and art. It contains a bonus chapter of manga showing life after the mainline series, which you can preview at Polygon.

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Where do I start reading the demon slayer manga after I have completed the first season of the anime? - Quora

In Demon Slayer, at the end we see reincarnated characters of those who died in the battle against Muzan. Why just those who died? why not those who lived on as well?

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Do you think that if Sakamoto Days gets an anime, the whole series will become a huge hit like Jujutsu Kaisen, Demon Slayer or Chainsaw Man? : r/SakamotoDays

It's bothers me when they are the 6 upper moons with 7 demon : r/KimetsuNoYaiba

Demon Slayer: Kimetsu no Yaiba: Demon Slayer Academy / Characters - TV Tropes

what character grew on you as the series went on? i'll start! : r/KimetsuNoYaiba

I was wondering why they animated tanjiro's broken fingers differently from the manga. Now I know, It was to give nezuko rabbit ears : r/KimetsuNoYaiba