Cottelle
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It was a heatwave, so what better way than to end a long day of work with a boat trip while the sun sets? All three of them never knew what fate was actually awaiting them, and unknowingly walked into an adventure that would change all of their lives. Underneath the full moon in the crater of a volcano, they never knew that they would be bestowed a blessing; or in hindsight, a curse?
March, Stelle and Dan Heng have to find out how to balance their new lives while keeping their secrets without any clue what happened, nor what exactly changed. How difficult can keeping secrets really be when you're one drop of water away from spilling everything? Will the shared secret between them drive them closer or actually apart?
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Astral Express trio in a H2O inspired / merpeople AU + more modern setting than the canon universe.
(can be read without knowledge of H2O)
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"She didn’t notice that her fist curled so tightly against the glass that her knuckles were starting to whiten.
“Stelle?” a familiar voice sounded rather suddenly from behind her. She turned around swiftly to see Mr. Yang standing there, rubbing the sleep out of his eyes before putting his glasses back on. It seemed he had woken up, whether that was by her or by something else. “I thought I heard some distant noise. Turns out I was right.”
“Oh,” Stelle said flatly, not thinking she’d been loud enough for him to hear. Apparently, she had. “Hi, Mr. Yang.”"OR
Stelle couldn't sleep and went for a walk in the Express, unexpectedly coming across Welt in the Parlor Car. They end up talking over hot soup about what happened in Amphoreus at three AM.
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Beyond This World by Cottelle
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game), Phasmophobia (Video Game)
23 May 2026
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" “Uhm. I don’t mean to interrupt but…” Sunday spoke up, “…this book reads Ghost Huntin’, A Survivor’s Guide.”
“What?” Dan Heng turned towards him slowly and glanced at the small book. Sunday nudged it closer towards him so he could read it. He had been right. The small book did read exactly that.
“Ghost what now?!” March exclaimed. “Hey, wait— how is this supposed to be the Simulated Universe?! It sounds nothing like what you told me about!”
Stelle shrugged. “It definitely isn’t.” "OR
Astral Express Quartet get stuck in Phasmophobia... What could possibly go wrong...?
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five times March 7th saw something suspicious + one time she found out what it was by Cottelle
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
28 Sep 2025
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"It wasn’t like March was a star in "remembering" trivial things that would happen during her travels. Most of the times, she would just shrug them off and act as if she hadn’t seen anything, practically forgetting the small details.
She would leave it up to Dan Heng to remember the details, while she kept taking pictures of sights that were aesthetically pleasing and worth remembering for decades. But if something were to come back more than 3 times, even she would notice it eventually and know something was off. But she didn’t know *what* it was.
That was, until she got to Amphoreus."
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What Remained of the World by Cottelle
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
22 Jan 2025
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When two researchers found a rather particular test subject and started investigation the matter, unforeseen disasters struck. A new type of disease, Atrophy, was found and this was detrimental to humanity. When one of the test subjects broke out, the end of humanity keeps on nearing, with the contagious virus being spread faster than processed. How will the last survivors live in this barren wasteland?
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HSR Zombie Apocalypse AU with various characters and dynamics
(TEMPORARILY DISCONTINUED FOR AN UNESTIMATED AMOUNT OF TIME)
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The Girl Who Dreamed Of The Stars by CinnamonRosettes
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
02 Jun 2026
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Afflicted with the Weathering Curse and a dream of reaching the stars, Himeko creates an Imagenae of the future she wishes she could have had. Together, they chase an impossible dream, and when the time comes, Himeko entrusts her wish to the one who can carry it beyond the horizon.
Series
- Part 2 of A Trail Painted In Starlight
Bookmarked by Cottelle
03 Jun 2026
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Exhausted from the tuning, Sunday felt he should head back to the Express for a good rest.
or, Ashveil was right. It actually was stupid when it took a toll on its aftermath.
Thankfully, he has a safe place to land his tired, broken wings.
Bookmarked by Cottelle
23 May 2026
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the stillness in-between by raedioactive
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
09 May 2026
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Sunday's thoughts, after tuning two hundred thousand people infected by Shuhu.
Series
- Part 7 of gravity
Bookmarked by Cottelle
09 May 2026
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is this how it's supposed to be by team_CAX
Fandoms: 崩坏：星穹铁道 | Honkai: Star Rail (Video Game)
09 May 2026
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Sunday is trying to adapt to life on the Astral Express, but he doesn't have an easy time of it.
Bookmarked by Cottelle
09 May 2026
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After the Planarcadia crisis, Sunday survives thought-tuning hundreds of thousands, but the cost is not clean. Even if he is not physically dying, everyone around him has seen what he is willing to do when faced with a catastrophe.
Now everyone's left dealing with the aftermath.
[Or me having Sunday get told by everyone about the gravity of his words and actions and he repeatedly gets told to rest, eat and not sacrifice himself for the foreseeable future.]
[Post-Version 4.2 Trailblaze Mission: So Laughed The Masses]- Language:
- English
- Words:
- 55,053
- Chapters:
- 12/14
- Comments:
- 201
- Kudos:
- 637
- Bookmarks:
- 130
- Hits:
- 13,199
Bookmarked by Cottelle
05 May 2026