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Honestly, I'm a bit sad you didn't even mention "The Twelve Kingdoms" anime and it's novel that it's based on. I love that Kiba was mentioned because I watched that when it first came out. I loved it but it not as well known as other anime internationally at the time and even now. The fact that you didn't even mention.Hack is surprising considering that it preceded SAO, especially in a gaming and isekai like format.