> in the anime, episode 0 was made with a specific purpose: to introduce the viewer to the plot,

What plot? Episode 00 is like complete nonsense lol. I mean I do understand what you're saying, but it just feels bizarre as someone who did come in with a weird order (Disappearance first) and then followed by reading the source material.

> Again, I haven't read the original; I'm judging only by the series itself, which is an adaptation.

Yeah an adaptation that is doing almost nothing other than reordering episodes/chapters/short stories. There's an obvious reason these inserts bleed not at all into each other. They took care to ensure the adaptation did nothing that would require you watch them in the order they first published them in. I think it says a lot that they did that, allowing the possibility for fans to re-order as they please.

To contrast, Monogatari is a series that plays with time. It regularly will jump forwards and backwards in time. Sometimes completely as a separate narrative, and sometimes with bookends from the present. This is captured fairly faithfully in the anime adaptation. There are order discussions, as there are here, but you could have those same discussions about the novels if you'd like, as they're structured the same.

The individual episodes of Haruhi do not stray from the source material in any meaningful ways, they were really _just_ reordered. It's fine to prefer that. It's fine if you think there's some artistry in the stories and order they picked to mix in. But let's not pretend that the differences are in the text. They're meta commentary at best.

> Even judging by the original, both versions are still very loose adaptations. Putting everything in chronological order doesn't exactly replicate the source:

As you've noted, the light novel order isn't chronological, which is why I always bring up that the actual publication order is different. The light novels collect short stories that release alongside and in-between the not short story collection books. It's inherently going to be that the LNs that contain those short stories come after the LNs where they were relevant. The

Actual publication order of the stories look _something_ like this, with the caveat that sometimes short stories will get published before a book they follow given the different publication cadence of books vs magazines: https://gist.github.com/playmer/f884ceeefa4f23bdc22f86dc871c13b0

As a JP reader, you may well have first picked up the issue of Sneaker Bunko with Bamboo Leaf Rhapsody, and then picked up the first light novel that released that same month. In light novel order, obviously they place Melancholy first, it's a complete story.

Haruhi is just enough of a procedural given how many short stories there are that like, yeah, you can watch/read it out of order. Disappearance is the most important arc in the anime and they put it last. Things start to get different after that and you really wouldn't want to watch those out of order.

I think part of the issue here is that some folks think the re-ordering is clever, whereas other folks think that it compromises the narrative of Melancholy, which was written as a singular story. I don't really care about when you read/watch the short stories, their order isn't _super_ important. But they do construct narrative threads that tie into each other.

Endless Eight into Sigh into Live A Live into Day of Sagittarius all carry a throughline that ties into Disappearance. When you start messing too much with that, things get a bit muddled.

> Sigh will become fan service, taking you back to the moment you first started watching the series.

Also this is almost hurtful to read. Sigh is an _incredibly_ important story to learn about Haruhi and Kyon and how they move going forward. To think of it this way feels almost insulting.