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Published:
2024-05-31
Updated:
2024-11-08
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5/?
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Celestial Navigation

Summary:

Even Destiny’s Slave knows half of fate is simply chance. An accidental encounter between trailblazer and child experiment opens a new path unforeseen, one that may eventually determine the future of not just Gaia but the universe itself… if, of course, they can get that far.

Or: Sephiroth joins the Astral Express.

Chapter 1

Notes:

Grad school is slowly pulling me under, so watch me revive old fics from the ether… not this guy tho. Initially sketched this out a few months back, and given I miss my hsr trio I finally finished it up. I have a few future chapters already sketched out, so expect a bit of this!

This being said, if you are absolutely new to Honkai Star Rail, never fear!! Sephiroth is also new so I’m fairly certain this story is understandable even if you know nothing about it.

As mentioned, I wrote this in-between the daze of grad school finals, so if there’s any spelling or lore mistakes please just let me know! I am very tired and my brain is very sleepy. We are all doing our best.

Additional warnings: canon-typical human experimentation and child abuse, blood, violence, and all around concerning implications. If there’s anything specific I’ve missed, please let me know and I’ll add it in here as soon as possible!

Hope you guys enjoy!

(See the end of the chapter for more notes.)

Chapter Text

i.

 

“Hey,” a stranger says. “You okay?”

It is late— this he knows only from the complaints of the aides and Hojo’s own sour mood, when they drew Sephiroth from his room for the tests. It is late, and if it were a good day Sephiroth could be sleeping now, in that cold and sterile room that is his only moment of peace. It is not a good day. The most recent tests have failed; the SOLDIERS they chose to make like Sephiroth liquified rather than survived. Once again, he is the lone anomaly. A special sort of existence.

Hojo tells him this, as he always does, as they strap Sephiroth down to that familiar gurney. He is special, and he is above this, so he won’t complain, even though it is late and he is tired and he has spent over eight hours on his feet, fighting monsters in the dark while Hojo watches behind the glass. He will stay still. He will stay silent.  He won’t flinch.

The lights of the lab flicker. An assistant is laid out on the floor—still breathing, her chest rising and falling, but blood trickles down the side of her face. An hour ago she slid the needle into his arm. Forty minutes ago she helped the doctor cut his other arm open. Twenty minutes ago she made notes on a clipboard about the rate of healing. Five minutes ago the alarms rang, and the lights flashed, and the lab assistant had pulled out a Fire materia with her eyes as much on the door as they were on the gurney. 

The lab assistant doesn’t get up. Sephiroth drags his eyes away from the floor. 

“You shouldn’t be here.”

The stranger stands over him, their shadow falling across his face, the lab lights haloing the back of their head. They cant their head to the side when he speaks. The look on their face is not one he’s ever seen before. He doesn’t know the word for it. 

“Is that a yes or no?”

Their hair is a soft gray. Their eyes burn alight from within, almost like Sephiroth’s own, except theirs are a clear gold brighter than even the sterile lights of the lab. He can’t even begin to guess at their gender; none of the usual markers seem to fit them.  

Blood smears across their cheek. A heavy club rests against their shoulder. 

“You shouldn’t be here,” Sephiroth repeats.

“Hmm. I’m gonna take that as a no.” Their eyes flicker down the gurney. The restraints, the cold metal, the scalpel Hojo left precisely on the surgery tray before he left to study Sephiroth’s bloodwork for the current test, ten minutes before the alarms went off. The metal club taps once against their shoulder and then vanishes in a burst of scattered light. Sephiroth stills.

The stranger has a finger to their chin. They look thoughtful. The expression fits them differently than it does Hojo; there’s something almost casual about it all, irrelevant. The way they roll on the backs of their feet. The slant to their shoulders. The easy confidence.

“How did you do that?”

The gold eyes flick back to his face. “Huh?”

“Your—club—”

“You mean my baseball bat?” Their lips break into a smile. It is—bright. The club returns, spinning in their hands in a whirl of light and flashing silver, and they end the move with a jaunty tap of the club against their collarbone. “Cool, right?”

Not a single word they’ve said makes any sense. He watches the trail of light with wide eyes even so.

The stranger visibly preens. A hand perches on their hip. “I know, I know.” 

The alarm reaches a new pitch. Down the hall, a voice Sephiroth doesn’t know—bright and girlish and so full of emotion it startles him—says, “Oh, come on!? Another one?”

“Watch your six, March.”

“I’m trying! Stelle, hello, where’d you go?”

The stranger turns back towards the noise. “Oops,” they say. Their face is blank; the words are said matter-of-fact. They look back down at the gurney. “Mm. Okay. Time to speed things up.”

Sephiroth waits dispassionately for them to leave. The stranger instead kneels down and… and takes off the restraints. 

Sephiroth stays where he is. He doesn’t move.

The stranger glances back up at him, and casually tugs off another leather strap from his wrist. “You can sit up now.”

“You’re not supposed to do that.” He feels like a broken record. He’s not sure what else to say. Don’t move, Hojo said, as he left the room. Don’t you dare move! the lab assistant had snapped at him, when he went to break his restraints at the sound of the alarm. The way her eyes flickered between him and the door. The door broke open. The stranger batted the assistant into the wall at the first blast of Fira. Sephiroth had stayed perfectly still throughout it all.

The stranger bops their head in a nod. “You mentioned.” Another strap released. They go for the last few around his ankles.

“…Hojo will be angry.”

A thoughtful hum. “Who?”

Another burst of light from the hallway. The brighter voice says, “Stelle? Hellooo?”

“Hojo,” Sephiroth says. The alarms keep flashing. He sits up slowly. He stares at them. “The… he is…”

The stranger watches him, patiently waiting for the answer. Sephiroth’s words wither in his throat. He does not know how to explain Hojo. He has never had to explain Hojo. He has never faced anything like this before. The lights. The alarm. The lab assistant on the floor.

“You aren’t supposed to be here,” he whispers. 

The stranger smiles at him. “Neither are you.”

It hurts. Like a shard of ice in his chest. He has never belonged anywhere and there is nowhere else he knows to be. His fingers curl. “I—!”

The stranger pats the top of his head. The words die again, catch ragged in his throat. Not from the same thing that took them before. Something else. Like a warmth pressed beneath his tongue. Like holding something fluttering between his grasp. He feels so still. 

“It’s chilly,” says the stranger, every word said factually and stone-cold certain. “And you’re only wearing a robe… you’ll catch a cold.” Sephiroth doesn’t move. The stranger pats his head again and then takes their hand back. “I’d give you my jacket, but then I’d be cold too.”

He has no idea at all what to say to that. He stares up at them. He can barely think to breathe. 

“Can you stand?” asks the stranger.

Sephiroth gets off the gurney slowly. He can stand. His arm, half-healed, drips blood on the floor. The stranger’s eyes turn to it and narrow. Sephiroth holds himself still. His hand curls to a fist. Don’t flinch. Does that still apply? He has already moved. He has already spoken. The alarm rings on and on. He shifts back on his heel and prepares to lunge.

The stranger snaps their fingers. He intends to go for their throat and flinches instead. Something lumps in his throat. He feels lightheaded. Nothing happens.

No. Wait. His arm—

His arm no longer hurts.

Sephiroth looks at it. The wound is gone. He looks up. The stranger is looking at his arm too, and after a moment they dip their head in a nod. “Nice.”

No one is supposed to use Cure on him without Hojo’s instruction. It did not feel like a Cure. It did not feel like anything. The stranger has no visible materia. They have already done so many things they are not supposed to do. 

Sephiroth’s head feels full of cotton. There is something building in his throat. Something between bitter and sweet. It curls tight in his chest and squeezes.

The stranger considers him. “Hey,” they say. “You have somewhere to go?”

They are so tall. “No,” Sephiroth tells them. He wants to ask— go where? He has never gone anywhere. Professor Gast used to say… but Professor Gast is long gone, and even then, it was always just a fantasy. Where exactly is Sephiroth supposed to go? Why is he going? This is the only place he has ever known.

He doesn’t know how to ask these questions. The stranger nods like they’ve heard them anyway. “Okay,” they say. They hold out their hand. “Then you can come with me.”

That strange tightness seizes in his chest. He stares at their hand. “Hojo will find me,” he says. The words feel numb and far-away. Like they don’t belong to him. It is not what he should have said. 

“Hmm.” The stranger tilts their head again. “Do you want him to?”

He can’t look away from their hand. The words weigh on his tongue. Quiet. Thin. “No,” he whispers. Presses his lips against it. Wishes he hadn’t said anything.

The dream doesn’t end. Hojo doesn’t reappear. His weakness remains uncontested. For a moment he almost hopes the stranger hasn’t heard. Then they grin down at him, bright and sly, and his mind goes as blank as the walls.

“Then he won’t find you,” says the stranger, with confidence. “Trust me. I know a safe place.”

Sephiroth doesn’t react. He is irrationally terrified that if he moves, the dream will shatter.

A shadow crosses the doorway. Color and light and a cold chill in the room. Another stranger. Pink hair and eyes like crystal. That brighter voice. “Stelle? There you are! Hey, who’s this?” 

“Dunno.”

“Aw, they look cold… hey, Dan Heng! Sacrifice your sweater!”

The conversation washes over him. Sephiroth is no longer listening. The hand is still outstretched. The stranger is waiting. Hojo will want Sephiroth to dispose of them. His hesitation is already a mark against him. Hojo has promised to tell him more about his mother. If he does well, if he behaves— one day, Hojo may even give him a picture of her. 

The lab assistant does not get up. The alarm rings on and on. 

Hojo is not here. 

A safe place. Trust me. These words do not make sense. These words are meaningless. They cannot escape and they cannot take him. These people will die, and he will suffer for it, and he will have to learn these age-old lessons all over again. It is childish to want it, foolish to even consider it. It is a fantasy worse than any story Professor Gast ever told him. To be swayed that unfounded confidence. To be lured in by the warmth of that hand on his head, the mischievous crook of that smile.

“Well?” says the stranger. “Are you coming?”

It is foolish.

Sephiroth reaches for that hand anyway.

 

 

Notes:

Baby Sephiroth is very smart and very loyal and really he KNOWS he will never be free from Shinra (he’s “special,” after all) but also maybe he can pretend? Can he please pretend? Obviously it’s all going to end in the messy death of these people and it will hurt but also maybe he can pretend anyway….?

Anyway. If I think too long about Ever Crisis/First SOLDIER Sephiroth it makes me sad. He is so isolated, and so lonely, and for a child who has grown up being “special” all he wants is “normal.” So, you know. I threw the Astral Express at him. Bastions of normality, those guys.

A few notes for this chapter:
—This fic was initially inspired by me looking at FF7 and going “hey, Jenova kind of works like a Stellaron haha” and then I thought about it a little more and I was like. Hey. Actually. What If Jenova Was A Stellaron

—This absolutely required me engineering a way for Sephiroth to meet the Trailblazer in this case (who is, for those unfamiliar with hsr, a host for a Stellaron). Big Sibling Stelle was also a big appeal to me. Thus, this fic.

—Sephiroth is not wearing a robe; he’s wearing scrubs. He is cold either way, not that the poor kid even recognizes that anymore. Stelle, who has never sat still for a doctor a day in their life, would not know this, rabid raccoon of a person that they are.

—Trailblazer is in fact nonbinary in this fic, but also looks androgynous enough that Sephiroth guesses the right pronoun by accident. (This is less him guessing correctly, and more that he’s still too nervous to ask/admit his lack of knowledge.) This will come up more explicitly later, mainly because growing up in a lab means Sephiroth’s understanding of the world is purely through Hojo and his assistants, and that worldview is…………… limited. Shall we say.

—On this note, similar to previous fic of mine, the Trailblazer goes by both Stelle and Caelus here, as well as a few other names, depending on their mood. I’ll dive into this more later, but also— if any of you have your own Trailblazer names you wouldn’t mind seeing in this fic, feel free to put them down below!! I may or may not take them for a spin!

—Sephiroth is about 9 here; he’s old enough to have some awareness of his situation and his own abnormalities, similar to how he is in First SOLDIER/Ever Crisis, but he’s yet to really absorb the mentality of a soldier. He is just young enough to still dream, deep down, of being saved… even if he still doesn’t know what it is he wants to be saved from. (That the whole situation feels surreal and dreamlike to him, in part due to Stelle’s attitude and casual baffling magic abilities, only helps. It doesn’t feel real, even if he WANTS it to be real, so… he doesn’t really react as if it IS real. (Otherwise there would be a lot more of a violent reaction in there, if only because Sephiroth would (rightly) assume he is expected to subdue the intruders. As it is he’s half-convinced he’s hallucinating, so!)

—Additional timeline notes: for HSR this is set nebulously post-Penacony (mainly because I am still making my way through those quests, so I’m not setting anything in stone). On Sephiroth’s side, he has been told of his mother “Jenova,” but has yet to receive the necklace with Lucrecia’s picture, mainly because I fully believe Hojo would dangle these scraps of family connection over Sephiroth’s head for as long as possible.

—By the way, Sephiroth has absolutely caught the names of this trio, but refers to them distantly in his head due to 1: he’s probably way too used to the lab turnover rate and tends to block out names until they become actually important to him, which is why the lab assistant is similarly unnamed; 2: if someone IS important enough for him to remember he’s usually required to refer to them formally (Professor Hojo, President Shinra, etc.) so even though he’s caught most of the first names he waits to be introduced officially so that he gets the formalities correct without slip ups. (The mental distance helps him do this; if he ignores the casual first names, he’s less likely to slip up and make a mistake in referring to them.)

—Stelle is an interesting case of this because their one moment of kindness has already racketed them up to “person I should remember” status (touch starved child gets one head pat and genuine smile and remembers it for the rest of his life) but because of that Sephiroth DEFINITELY doesn’t want to upset them (what if they stop smiling at him??? Terrible) so he’s being extra careful to not pick up the casual first name so he can get the formalities right first try when they finally introduce themself.

—Meanwhile while Sephiroth is playing 3D name chess in his head, Stelle has just straight up forgotten to ask his name. Or introduce themself. Or even that that is a thing that needs doing. Braincells who?

 

Any thoughts??