@legendaryswordsman
yes, I'm aware that this series always does it this way. I also think that it's always in the wrong place for the story. I mean obviously these flashbacks are only for the reader, since they go unseen and unnoticed by Tanjiro and crew.
So basically none of these flashbacks advance the story or contribute to the growth of the characters.
I also agree that many times we get 'hero fights villain, flashback, villain dies' (which is what I just said in my previous post), but again, that's no good either. It does smack of obvious death flags, and i do like how the author is willing to sacrifice important characters, but I still think the way it's being handled could be better.
Obviously the good guys won't always be aware of the complicated backstory of their enemies. But I think it's a slightly lesser story because of it. A lot of life lessons learned too late and passed on to no one.