Really MiHoYo? Murata, Musatas? Come on!
And yes I've checked the Chinese. It doesn't actually matter because Musatas is not related to the Chinese name lol Localization team ftw! 
But MiHoYo does giveth and it does taketh away. I don't think Demon's Lament can ever happen now. Not because it couldn't happen in terms of the lore. I don't think it can/should happen because of what we got in this quest. It would just be in poor taste.
So where does my theory about Murata and the Fire Yaksha sit now?
Shockingly it's still going. And that's because of the new information that this quest provided.
First let's talk about the stuff that's totally disproven now. Bosacius is 100% a male yaksha and in fact is the Electro Yaksha. So the Latin thing is still consistent. (That said I did correctly label Indarias and Menogias as the Pyro and Hydro Yaksha in that topic.)
Something else disproven now. Pyro Yaksha didn't go crazy. So MiHoYo pulling tricks on us even in teasers is now confirmed. (They've learned from Marvel. ) Even though Zhongli talked about the yaksha that went darkside when the video showed Bosacius it was in fact Bosacius that went insane from fear. And we did get reinforcement of Indarias mask breaking and her screaming but that still doesn't feel like evil to me. So maybe it's Bonanus who went darkside because we did see him blast Menogias in the teaser. But what we do know for sure now is that all of those 3 died and the teaser saying "one vanished without a trace" is exactly how the Electro Yaksha is described in the Tenacity Set.
That said since I was dismissing Electro the whole time as the evil yaksha everything I said about Pyro could actually apply to him and then the reverse applies to Pyro. So I said that Bosacius created that World Quest as an homage to his friends the Geo and Hydro Yaksha but the other one (back then I thought it was Electro) was omitted because they went darkside and betrayed them. Well who's missing from the spherical Domain? Pyro.
Side Note: Funny enough my whole Demon's Lament thing said that this would be far off enough that Xiao would get a rerun. He's got his rerun lol
Ok now that the disproven stuff is out of the way what's this about new evidence in favor of Murata/Musatas being the Pyro Archon?
Well first off there's her Chinese name. Unlike the dub it's actually something very understandable. Any Inuyasha fans? Her name is General Fire Rat. Fire Rat as in the demon rats who have flaming red fireproof fur that Inuyasha's outfit is made from. And I'm about to say the same thing I said many times for Japanese stuff: Fire Rats are Chinese. So unlike in Inuyasha we actually know more about them including that they come from the "southern volcanoes" region. You guys remember my theory on where Natlan is?
So there's that but there's also the fact that we know she's dead. You guys remember this theory? I claimed she was going to try resurrecting her friends. What if she herself was resurrected? And since she was able to come back she's intent on bringing them back too.
"When the God of War shares this secret with the Traveler, it is because she has her reasons."
And now for "evil." You guys now know at least part of my big theory right? Each of the remaining Archons we have to visit are going to be enemies. If Murata was just going to be a crazy girl with a destructive resurrection plot that might be a little too ***e to make her an enemy. We might sympathize. But if she was the yaksha that "succumbed to the darkness" then her resurrection might lead her to atonement. But being corrupted it could easily go poorly especially if the resurrection plot is her goal. Also you have the Fatui and I believe Natlan would get Sandrone who manipulates people.
Also if you guys are just shaking your heads because there's nothing to point to any similarities between Murata and Musatas well
"The rules of war are woven in the womb. The victor shall burn bright while the loser is turned to ash."
And the Pyro Yaksha actually fits well into Natlan's real world inspiration. Given the stereotypical headdress of the Muratans in the manhua and Iansan a character we already know is coming in that region it is likely based on South American Native culture. Now that could easily also tie into the rest of Native American culture since we don't have enough written information to go on for any singular one of their civilizations.
So Native American culture does have an "evil god" who might hold tests of strength and burn the loser to ash. Aztec culture's Tezcatlipoca.
He is a corruptor who brought down even the sky god Quetzalcoatl and influenced the practice of human sacrifice into Aztec society. He is said to appear at crossroads and challenge warriors. And there's a ritual under the cult of Tezcatlipoca where a warrior would be treated to all worldly pleasures for a year. At the end of it though he'd go up to the top of an altar and cut out his heart in sacrifice. Finally Tezcatlipoca is a god of many many things but one of them is War. (Also the name means smoking mirror for that touch of Pyro.)
Not hot enough for you? How about
Pele the Hawaiian God of the Volcano Kilauea?
What's special about Pele is that she's not a native to the region she presides over. Instead she took over after the original god Ai Laau left. (This name also means "forest eater" btw haha) We do know that Murata isn't the original Pyro Archon right? And if Pele here is a non-native it does make sense a non-native say a Liyue-based yaksha could represent Pele's lore in Genshin.
And another thing about Pele is that she's temperamental. This was back when I thought Murata was the crazy yaksha. Pele does what she wants when she wants including having an affair with a storm god because they were mortal enemies but then that meant falling madly in love? And then the storm god suddenly becomes more godly looking or something so Pele freaks out and tries to kill him. He escapes and then Pele pines for him. And also gets pregnant.... Yeah.
But the "does what she wants when she wants part" fit nicely with my Elemental Characteristics Theory where I said the common theme of Pyro characters is their assertiveness. They will do what they want no matter what.
And that's where we are. MiHoYo clarified that Bosacius was the Electro Yaksha, he's the one that went crazy not evil, Pyro is suspiciously missing from both his homage and the Domain depicting all the other 4 yaksha and we now know a new name per yaksha. (with English localizations that are unrelated lol) This disproves tons of stuff and makes it not a good idea to have a Demon's Lament Domain/World/Weekly Boss at any point in the future. I think the Electro Yaksha's story is done. On the other hand we now know that Indarias is the Pyro Yaksha, she's the "fire rat" which come from the southern volcanoes which is likely where Natlan places on the Teyvat map, she did in fact die but Natlan's chapter title is Incandescent Ode to Resurrection and she has real world lore connections.
Let's see what happens.
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PS: Also knowing she's dead means it's also likely Zhongli wouldn't even know if she did become the Pyro Archon. Meanwhile Venti knows about Murata at least and why was that included in the early lore? Maybe Venti knows who she really is and has been working behind the scenes to reacquaint them. He's also an original Seven Archon after all. And he has protected Xiao's sanity too.
PS2: Also also it was really cute that Papa Adepti was there for his baby boy. Loved the cameo. And it still doesn't go against the Human Age theme because Xiao's not human. So Morax can be a helping hand without issue.
