Context: Patrick/my self-insert was fighting against Otto Apocalypse, they both get sucked into a portal to the prime dimension where Hoyoverse/MiHoYo began. "Fly Me 2 The Moon". It's kind of like what happens in "Turtles Forever" from "Teenage Mutant Ninja Turtles" 2003. But they both end up in the prime dimension separately. How it works is that if a prime dimension is destroyed, the other dimensions that braced off all get wiped out also. And I am aware of the fourth wall.

(Lunar Ruins)

A flash appeared and Patrick appeared but he looked different. He was in a summer school uniform and looked to be 16 year old again.

Patrick: Looks like the particle emissions end here and where the portal ends. Which means this must be the place. The prime dimension. MiHoYo's very first game. "Fly Me 2 The Moon".

The camera zooms out from him then the camera comes back to him.

Patrick: From what I remember is that Kiana began everything here. She was just a young witch wanting to restore her family honor by going to the Lunar Ruins. But not a lot of context. That song MoonTrip was sung by Hatsune Miku. This world came before the others. Zombiegel Kawaii, Houkai Gakuen 2/Guns Girl Z, Honkai Impact 3rd, Genshin Impact, Tears of Themis, Honkai Star Rail, and Zenless Zone Zero.

Patrick turns to a random direction.

Patrick: If this world goes. Then so will all the others. This was where Kiana was born. then in Guns Girl Z the others were born. Mei, Bronya, Seele, Theresa, Himeko, and Fu Hua.

Patrick looks down at his shoes.

Patrick: If the girls in this world are witches. Which must mean that the boys here are wizards. And the purpose of the game is to collect 3 stars and touch the moon and get teleported to the next space-time.

Patrick has the Silver Moon Corona come out of the bottom of his shoes and he flies.

Patrick: Not bad. But let's see if my powers still work. Trace on.

He holds out his right hand then a sword appears. Then he replaces it with a wand then a gun then makes it disappear. Then he materializes the elements one at a time in his hand.

Patrick: Ok. My powers still work.

All of a sudden he heard he hears something as he lands back on the ground.

Patrick: What was that?

???: Who goes there?!

Patrick: Uh oh. I think someone just found me.

Someone appears before him.

Kiana Kaslana from the beginning what she originally looked like.

Patrick: Source dimension. Source Kiana.

Kiana: What is this? Who are you supposed to be? You don't look familiar.

Patrick: It's hard for me to explain. But I just ended up here from a flash.

Kiana: Huh? Now you lost me.

Patrick: I'll explain.

(One explanation later)

Kiana: So you're name is Patrick and your not from this world and you know me from another reality... I don't see it.

Patrick: I know it's weird but it's the truth. We don't have much time. Otto Apocalypse is going to be here soon and if he destroys this dimension, all the other ones will go down with it.

Kiana: Otto Apocalypse?

Patrick: An evil man who I have a serious score to settle with.

Kiana's eyes widened.

Patrick explained everything to Kiana and she was shocked.

Kiana: If what you say is true, we must stop him at all costs! He cannot be allowed to destroy the very fabric of our existence!

Patrick: Exactly. He's a dangerous threat who killed Himeko and my dimension's version of your mother. We need to find a way to stop him before he can do any damage here.

Kiana clenched her fists, determination blazed in her eyes.

Kiana: Let's go then. We don't know how much time we have before he arrives. We need to find a way to prepare.

Patrick nods solemnly, and together they set off, the dusty moonlit path stretching out before them like a silent sentinel. As they walk, Patrick can't help but feel the weight of his mission pressing down on him. This is the birthplace of all the worlds he knows from Hoyoverse, the wellspring of countless stories and friendships. If it falls, so too will the worlds of Genshin Impact, Honkai Impact 3rd, Honkai Star Rail, Zenless Zone Zero, and all the others.

And that was another random idea I came up with. Multiverses make sense. Like when there's a prime dimension there are other dimensions that branch off and if the prime dimension gets wiped out then so do all the other dimensions that branched off once a prime dimension gets wiped out.