The 2000s were Anime's most Revolutionary Decade

I don't think Anime has changed more in any single decade then it did in the 2000s.

At the start it looks a lot like the late 90s and by the end it looks almost like what 2010s Anime has been.  That's normal of course.  My point lies more in how radically different the 90s are from the 2010s.  In a lot of ways the early 90s only looks a couple upgrades different from the late 70s.  However comparing what was airing in December of 1999 to January of 2010, it can be hard to believe that took only 1 decade.  

The 2010s meanwhile as much as I've loved the Volume of Anime they've given me (about half of everything I've watched), do feel like they've mostly been defined by a handful of trends.

The 2000s were the most experimental decade, a decade where seeds planted in the 90s were nurtured and cultivated to eventually fully blossom into what we see now.

How did the Magical Girl genre go from Sailor Moon and Card Captor Sakura to Madoka Magica and Yuki Yuna?  Well stuff like Magical Girl Lyricla Nanoha fills in the gaps.  But in the world of Magical Girl shows that stayed strictly kids' shows, the first 6 years of Pretty Cure laid the foundations of everything that franchise has been doing since.

When it comes to the really out there trippy stuff, yeah everything in the 2000s may be standing on the shoulders of Eva, Utena and Lain, but that just helps them reach greater heights.

Is Mecha dead?  That's a question that's been haunting Anime discourse for awhile now, and I'm not interested in answering what most people mean by that question.  What I miss about the late 90s and 2000s was how Mecha just sorta popped up in shows that weren't mainly Mecha shows.  Like oh you're gonna do Futuristic Space Opera Anime Count of Monte-Cristo, of course the duel is gonna be with giant robots instead of swords or guns.  And even among stuff that Mecha could be considered the main genre classification, today they are usually one of three things, trying to be Eva, trying to be Gundam, or very rarely trying to be Mazinger Z.  It's only in the 2000s that we had a lot of Mecha shows that don't easily fit into any of those.

The nature of these transitions were complicated.  Partly in how often Anime is behind it's source material.  A lot of the trends that have defined mid to late 2010s Anime were already flourishing in these more niche mediums in the late 90s and early 2000s.  Remember when the Sword Art Online Anime debuted it's source material's original publication was already a full decade old, older then some well known franchises that got animated a lot sooner.

Light Novels have existed and been an occasional source material for Anime longer then Visual Novels have.  But in the 90s and very early 2000s the kinds of stories an Anime fan would associate with the term "Light Novel" were completely different.

You could conceivably take any year from the 2000s and argue it to be a key transitional year.  But for the rest of this post I shall focus on arguing for 2006, simply because some shows from that year have been on my mind.

Prior to 2006 no Visual Novels got any 2 cour Anime adaptations, AniDB may list some but I'm pretty sure those are based on games that don't properly count as VNs under the strictest definition.  But in 1 year 2006 saw the debuts of three 2 cour Visual Novel Anime, Higurashi, Fate/Stay Night and KyoAni's Kanon.  Two were instant hits that were in some way followed up immediately.  The one that didn't quite take off as immediately eventually dwarfed the rest to become one of the most all consuming brands in all of Anime.

And in the world of Anime adapted from Light Novels, The Melancholy of Haruhi Suzumiya single handedly changed everything.  Though The Familiar of Zero also got it's Anime that year.

In addition to shows that were seemingly giving birth to the 2010s in that year, there were also shows that were in some ways send offs to trends of prior eras.  Nerima Daikun Brothers isn't technically the last Nabeshin Anime, but I feel it was mostly the last gasp of the style of Anime comedy popularized by Excel Saga.  Meanwhile Strawberry Panic felt like the Magnum Opus of everything the Yuri Genre had been for the prior half century.

And Pokémon quite literally transitioned from Advance Generation to Diamond and Pearl.  At the same time it's English localizers made some production transitions.

There was also plenty of stuff that feels just as related to what came before as to what came since, but still while being innovative.  Code Geass, Death Note, La Chevlair D'Eon, Kashimashi: Girl Meets Girl.  And then there was a show that wound up making a good case study in Anime obscurity.

Update: On my Twitter thread promoting this post I wound up talking about an interesting 2007 show.

https://twitter.com/KuudereKun888/status/1459123983417229338