Caelus didn't understand a single thing that was happening. At first he was on the Astral Express with everyone, but then a white flash blinded his eyes. When he opened them he was in an entirely different environment, but he also saw familiar faces.

"Caelus ." Caelus turns around, seeing Himeko and the rest of the Astral Express.

"Himeko? Where are we?" Caelus asked. From what he can see from the others expressions is full of confusion and alertness.

"I don't know. But from what me and Welt could gather is that everyone experienced a flash before appearing here." Himeko looks at everyone. They nod, confirming that they'd also experienced the same thing.

"Astral Express." Greeted a man also known as Jing Yuan.

"General." Welt greeted back "I assume you and the others also experienced a flash just like us."

Jing Yuan nods. "I've also explored a bit of this place since I seemed to be the first one to arrive."

"The first one..?" Himeko questions. She also looked around seeing a large amount of seats placed in rows. The next thing she sees is the giant screen.

"This place is giving me movie theater vibes." March 7th mentions.

Now that she mentioned it everyone was also able to come to that conclusion.

"But why a movie theater?" Dan Heng looks up at the large screen.

While everyone talks among themselves Caelus wanders around the room, passing by multiple people he's met during the Astral Express's adventures. But while walking he feels a tap on his shoulder. He turns around and sees the girl he has recently met in Penacony.

"Firefly?"

Firefly smiles at him.

"Hello Caelus."

Caelus couldn't help but smile back. "Good to see you again, Firefly."

"Oh it's Firefly!" a voice shouts from behind.

Caelus turns around to see March and Dan Heng walk up to them.

"Oh hello guys." Firefly waves at them. March waves back.

"Do you guys happen to know where we are?" March asks.

Firefly shakes her head. "All I could remember was a flash, then I was suddenly here."

"So you too huh" March sighs, frustrated that no one seems to know what is going on.

Dan Heng turned around while they continued their conversation and took a look at the one thing that Dan Heng noticed was a gold plating beneath the seats.

'Blade''

'So he's here too..' Dan Heng continues through the seats and sees more names. Everyone seemed to notice what Dang Heng was doing so they all gathered around the seats. Though Dang Heng could feel a certain someone's animosity in the crowd.

"What is it Dan Heng?" Himeko asked.

"These seats seem to have everyones name on them."

Everyone looks at the seats and sees the gold plating with names on them.

Dan Heng continues to walk until he finds what he was looking for.

'Dan Heng'

Dan Heng stares for a couple of seconds before taking a seat. The moment he sat down something came up on the screen.

'Waiting for all guests to be seated'

Everyone was surprised at what happened. They all followed and looked and sat in their assigned seats. Everyone found their seats quickly while Caeulus looked around,

'Crap! Where's my seat!' Caelus went row to row and he continuously found empty seats, but none with his name. Everyone sat down before him, now everyone was staring at him.

Although finding his seat was much easier he couldn't help but feel embarrassed from everyone stares. As he arrived at his seat, around him was the Astral Express so that made him feel a little better. He took his seat, after a couple of seconds the screen started buffering. Then a message came up.

'Hello, you're probably wondering why you're all here. Well you're here to watch a different reality from your own. The reason why, for my own reasons. Although you're here now the time where you came from is currently on pause so now, enjoy.'

"What kind of sick joke is this?" Seele glares at the screen. A few others shared her thoughts.

"Oh come on, let's calm down everyone." Stelleron Hunter Kafka says "This could be interesting."

Although she seemed calm, Kafka was on guard. Same with the other Stelleron hunters. This sort of event has nothing to do with Elios script. Also to have the power to just pause events from their reality just frightens not only the Stelleron hunters but everyone in the room.

Himeko nodded to the Astral Express, although she said nothing everyone knew to stay on guard.

The buffering finished. The screen then went black.

"Morning," a voice said. The black screen changes to emulate a person's eyelids opening.

'No way…' Caelus thought to himself.

Caelus wakes up from being knocked out. His breath shaky not knowing what's going on.

'CAELUS!/TRAILBLAZER!'

Everyone looked at Caelus.

"Why am I..?"

While others had their own reactions, a row behind Caelus was Firefly sitting with the rest of the Stelleron Hunters.

'Why is he hurt...' Firefly could see the dried up blood under Caelus's lip.

The Astral Express couldn't help but worry. They all could see the bruises and the dried up blood.

Caelus takes a look at the surroundings. He's in a dimly lit room with strips of paper with writing everywhere.

"What's with the paper? If you ask me this looks like a ritual," March then blinks for a few seconds "Wait is he being sacrificed!" March shouts.

"So which one are you right now?" Jing Yuan asks

"G-General?" Yukong voices out.

"What's with the blindfold?" Fu Xuan questions, which everyone else who knew the man wondered too.

"Maybe it's a type of fashion in this reality." Jing Yuan jokes. Though he instantly notices his other self is calmly sitting down. Meaning his other self is probably the reason Caelus is tied up.

"Aren't you?" Caelus asked, like he was familiar.

"Jing Yuan, I teach first years at Jujutsu Tech."

"Jujutsu Tech?" March says aloud.

"Well going by his own words, The general seems to be a teacher." Welt said

Jing Yuan couldn't help but hear his other self say 'years' in plural.

'So I teach multiple students.' Jing Yuan looks over to his own student.

Caelus picks his head up "Jujutsu?" He looks confused. "Dan Heng…" He mutters.

"My friends!" Caelus lunges a bit forward but something holds him back. He turns his head to see his hands tied to the ground by a thick rope.

Now the Astral Express was even more worried than before. The mention of Dan Heng and the way Caelus is tied up, kept them on the edge of their seats.

'Dan Heng' Blade clenches his fist at the mention of Dan Hengs name.

"Bladie, calm down." Kafka calms Blade down.

Gepard jerks his knee up and down. Nervous at the sight of Caelus being tied up.

"Calm down Gepard." Serval touches Gepards Shoulder "We'll find out soon enough."

Gepard takes a deep breath calming himself down.

"What the hell is this?" Caelus questions.

"I'm not sure you should be worrying about others 'Caelus Stellaris'." Jing Yuan said, sitting in a chair backwards.

'Stellaris?' Caelus thinks to himself "Is that my last name?"

"What a nice name Caelus." Himeko attempts to diffuse the tension in the room.

"Oh thanks Himeko." Caelus smiled back.

Now the last name 'Stelleris' is news to everyone. Everyone who had the chance of meeting Caelus never heard of him mention anything about his last name.

"Shouldn't be worrying about others..?" Adventerine whispers while flipping his coin.

Topaz turns her head "What's wrong?"

"Nothing. Just a thought." Adventerine stares at the screen.

'It's been decided that you are to be secretly executed." Jing Yuan revealed.

The camera zooms into Caelus, his face full of shock and worry.

"..."

"EXECUTED?!"

Yeah so that's pretty much it. I got bored and came up with the idea of what would happen if Honkai Star Rail characters watched Jujutsu Kaisen. Now I wrote this because Caelus's JP VA is the same as Itadoris voice actor. Also I've seen some edits on YouTube with redrawn scenes of Itadori with Caelus. Now this is my first reaction type of fanfiction so I'm not an expert in this. Plus it's kinda hard coming up with reactions for each character lol. Now if this first chapter seems kinda lazy then my bad. I tried to get it out of the way so I could move on with the reactions. I'll try working on them by watching the first episode as soon as possible. (Although this will most likely not get enough attention.)

But anyways basically I'll be replacing characters from HSR with characters of Jujutsu Kaisen. I'm mostly inspired by ZaydenStorms Watching the MCU fanfiction.

And I have some characters already for who will be who but if you have some recommendations that will help me a lot. Thanks for reading. If there's spelling mistakes then I'm sorry.

P.S Trailblazer x Firefly best ship :))))))