cosmic_zero
Fandoms
Recent works
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prazosin lullaby. by cosmic_zero, SHIZUHARAPOCALPYSE (cosmic_zero)
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
24 Oct 2025
Tags
Summary
[S.F. Spoilers]
Sometimes, Hiruko gets nightmares. But sometimes she gets other kinds of troublesome dreams.
(The falling bedsheets sigh against her skin, as she presses a hand to his chest. He's always just out of reach.)
- Language:
- English
- Words:
- 434
- Chapters:
- 1/1
- Kudos:
- 14
- Hits:
- 113
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heat queen by cosmic_zero, SHIZUHARAPOCALPYSE (cosmic_zero)
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
22 Oct 2025
Tags
Summary
Every time Takumi touches Hiruko, her body is pleasantly warm.
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Flufftober 2025 day 22: Polar Opposites
Series
- Part 10 of cosmic's flufftober 2025
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the fools love makes by cosmic_zero, SHIZUHARAPOCALPYSE (cosmic_zero)
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
20 Oct 2025
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Summary
Takumi's not entirely sure how he got himself into this. One second he'd befriended the icy class president, and the next, she'd asked him to appear as her boyfriend. Before his jaw hit the floor, she clarified: fake boyfriend.
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Flufftober 2025 day 20: Fake Relationship
Series
- Part 8 of cosmic's flufftober 2025
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cost you by cosmic_zero, SHIZUHARAPOCALPYSE (cosmic_zero)
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
17 Oct 2025
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Summary
It’s Halloween time, and Takumi and Hiruko have a costume party with their friends.
Hiruko, who isn’t usually the type for such things, now has to find herself a costume.
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Flufftober 2025 day 17: Making or Buying a costume
Series
- Part 9 of cosmic's flufftober 2025
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bedbug by cosmic_zero, SHIZUHARAPOCALPYSE (cosmic_zero)
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
11 Oct 2025
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Summary
Takumi’s bed is like his citadel. Unfortunately, there are enemies (singular) at his doorstep.
(Takumi needs to get up eventually, and Hiruko knows that.)
Recent series
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cosmic's flufftober 2025 by cosmic_zero, SHIZUHARAPOCALPYSE (cosmic_zero)
Fandom: The Hundred Line -Last Defense Academy- (Video Game)
22 Oct 2025
Summary
here be fluff. less so than last year because i've had writer's block for months now. sadge
- Words:
- 6,607
- Works:
- 9
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author's favourite works by cosmic_zero, pekoposting (cosmic_zero), SHIZUHARAPOCALPYSE (cosmic_zero)
Fandom: Dangan Ronpa Series, The Hundred Line -Last Defense Academy- (Video Game), 超探偵事件簿 レインコード | Master Detective Archives: RAIN CODE (Video Game)
26 Feb 2025
Summary
from 2024 onwards (i.e. the vast majority of my fic catalogue), i usually have to be very happy with a work to publish it. or at the very least i think there's at least 1 good concept in it
but i am also aware that i can write fast, and upload a lot. so, 'tis an attempt to cut them down to the ones i like the absolutely most to try make my fic catalogue a bit more approachable
(biased towards The Hundred Line -Last Defense Academy- because that's my hyperfixation rn)
- Words:
- 21,465
- Works:
- 12
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zero's Femslash February 2025 by cosmic_zero, pekoposting (cosmic_zero)
Fandom: Dangan Ronpa Series
21 Feb 2025
Summary
Using multiple different promptlists, but primarily the femslash bingo one done by @femslash-february on tumblr and the danganronpa-specific one done by @danggirlronpa. also on tumblr
1. forbidden (pekonia)
2. talent (pekonia)
3. deadly life (pekonia)
4. ponytails (peko x sakura)
5. ocean (pekonia)- Words:
- 3,357
- Works:
- 5
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cosmic's flufftober 2024 by cosmic_zero, pekoposting (cosmic_zero)
Fandom: Dangan Ronpa Series
31 Oct 2024
Summary
welcome to flufftober, where i will post something fluffy (almost) every day of october! and spam the pekoyama tag in the process!
(bonus if i tag regular ol' hope's peak fics as non-despair.)prompt list is here
1. lost pet meet cute
2. "left. other left!"
3. favourite scent
4. bonus 1: "i've got you"
5. pinecone
6. mistaken identity
7. hoodie weather
8. chopping and piling wood
9. "don't do that!" - "but..."
10. bet
11. bonus 5: porch swing
13. hidden room
14. fantasy au
15. "what are you wearing?" - "it's laundry day!"
16. yes, no
17. only one bed
18. bonus 10: rejected, betrayed, exiled, left behind
19. yarn
20. paw
22. bonus 9: suddenly severed communication
23. stormy night
24. comfort food
25. haunted house
26. "i can't find it"
27. afternoon stroll + bonus 2: rainy day
28. lucky charm
29. bonus 8: written but never sent
30. "forever?"
31. make a wish- Words:
- 30,696
- Works:
- 29
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Pekoyama additional tags focus by cosmic_zero, pekoposting (cosmic_zero)
Fandom: Dangan Ronpa Series
08 Nov 2024
Summary
My next endeavour into scraping Pekoyama for every ounce of fic ideas I can. (Don't worry, I'm nowhere near running out of ideas. Unless you hate Pekoyama. In which case, worry.)
1. Trans Pekoyama Peko / Nonbinary Pekoyama Peko
To do: Despair Pekoyama Peko, Bisexual Pekoyama Peko, Background Pekoyama Peko, Mastermind Pekoyama Peko
To possibly do: Kiyotaka Ishimaru and Pekoyama Peko are siblings
- Words:
- 1,531
- Works:
- 1
Recent bookmarks
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an empty vessel, running over by Lyre (Lyrecho)
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
05 Oct 2025
Tags
Summary
Takumi hasn't been acting like himself, lately--he's furtive, solitary, and spending almost all his time beyond the Wall of Flames.
Nozomi's sure that something's not quite right with him. And when she brings it up to Hiruko, she determines that they're going to find out just what is going on.
Bookmarked by cosmic_zero
07 Oct 2025
Bookmarker's Notes
[S.F. Route Spoilers]
certified banger. as someone who does not feel confident in their deeper understanding of nozomi, this was very illuminating. and damn does it get hiruko so right too
minor spoilers for da fic:
the part where she starts getting hiruko's memories back is so fuckin well done. AND YESS I WAS HOPING THE BLOOD DRINKING TAG WAS FOR THE TWO OF THEM -
A Hello Knock (Not Goodbye, Not Again) by gaikotsuriria
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
17 Aug 2025
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Summary
After a certain ending where Hiruko burned to death in the company of the one she loved, she spends the beginning of her next chance checking up on Takumi.
For unrelated reasons, of course.
(Spoilers for Slasher Route).
Bookmarked by SHIZUHARAPOCALPYSE (cosmic_zero)
17 Aug 2025
Bookmarker's Notes
[slasher and s.f. spoilers]
ough. nicely written!
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hands and teeth by Lyre (Lyrecho)
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
04 Aug 2025
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Summary
In the aftermath of their first battle at Last Defense Academy, the fighters struggle to deal with an unfortunate side effect of expending so much hemoanima.
Bookmarked by SHIZUHARAPOCALPYSE (cosmic_zero)
04 Aug 2025
Bookmarker's Notes
gorey but swag and well written. fascinating concept
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it could be me by theriveroflight
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
03 Aug 2025
Tags
Summary
Hiruko knows who the G'ie queen is, too.
- Language:
- English
- Words:
- 200
- Chapters:
- 1/1
- Collections:
- 1
- Comments:
- 2
- Kudos:
- 25
- Bookmarks:
- 2
- Hits:
- 159
Bookmarked by SHIZUHARAPOCALPYSE (cosmic_zero)
03 Aug 2025
Bookmarker's Notes
[BoC and implied slasher spoilers]
ough...
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The Hundred Line -Parallel IIIs- by BurgundyPlatypus249
Fandoms: The Hundred Line -Last Defense Academy- (Video Game)
07 Jul 2025
Tags
Summary
"On Day 101, Day 102, and all days after..."
Takumi Sumino was a totally average teenager living in the Tokyo Residential Complex... 199 days ago. 99, for most anyone else. The fickle hand of fate would not yield, not even when time itself had. At the end of it all, enough blood wet the ground of this war-torn planet to drown in it... The task of all survivors? Hold your head up high, and keep breathing. Now veterans of war, and an insidious "Invader Hunt," can the battle-hardened Takumi and his remaining friends do just that? Across the sprawling fractal of world-splitting decisions, a ripple from just one now carries all the rest...
MAJOR ROUTE SPOILERS: Killing Game, Second Scenario, Conspiracy, Slasher, S.F., Retsnom, Box of Blessings, Box of Calamity, Mystery, Cult, Coming of Age, V'ehxness, Eva, Goodbye Eito, Reset
(minor route spoilers: Serial Battles, Comedy, Multiple Eitos, Romance)
((Tags and spoiler warnings will be adjusted as needed))
Bookmarked by SHIZUHARAPOCALPYSE (cosmic_zero)
21 Jul 2025
Bookmarker's Notes
chapter 5 (slasher spoilers) is some swag takumi and hiruko content