11 Works by CYAthha
Listing Works
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Gridman: Still With You / Gridman: The Shadow That Fell on My Heart by KatsuraTsuruya (CYAthha)
Fandoms: SSSS.Gridman (Anime), SSSS.Dynazenon (Anime), 電光超人グリッドマン | Denkou Choujin Gridman, 私の知らない他校の制服 | A Uniform From a School I Don't Recognize
06 Apr 2026
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Summary
Roughly 15 months have passed since the end of Gridman Universe. The denizens of Tsutsujidai and Fujiyokidai have had a chance to enjoy their happy endings. The footfalls of a kaiju directed by a mysterious woman break the comforting rhythm of daily life.
What happens to those a happy ending leaves behind? What happens to those who try to force an ending to feel right?
Is anything ever "over"?Note: The translated post-Gridman Universe movie voice dramas are essentially required reading for this work, as they provide a lot of context for what everyone's relationships look like post-Universe that I lean on very heavily; character motivations follow directly from those events and they do get referred to periodically as events that happened.
If you haven't read them, they're here! https://barnnn.blogspot.com/p/ssssgridman-voice-dramas.html
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The Thorn in Her Heart by KatsuraTsuruya (CYAthha)
Fandoms: Octopath Traveler II (Video Game)
09 Jan 2026
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Summary
Near the beginning of her journey, Castti meets a cleric in Flamechurch -- the second she'd met that day.
The cleric begins the slow work of sliding a thorn deep into her heart, in the hopes that it will someday break.
... You can't say this *didn't* happen sometime between the beginning of the game and Crossing Paths O/C 2.
- Language:
- English
- Words:
- 9,742
- Chapters:
- 1/2
- Kudos:
- 10
- Hits:
- 266
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Catharses Physical and Otherwise by KatsuraTsuruya (CYAthha)
Fandoms: Octopath Traveler II (Video Game)
22 Dec 2025
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Summary
Throne hears some singularly horrid vomiting immediately after Agnea's grand performance in New Delsta. She investigates the source, and then talks to the source at some length about some pent-up emotions.
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Jus Post Bellum by KatsuraTsuruya (CYAthha)
Fandoms: Fire Emblem: Fuukasetsugetsu | Fire Emblem: Three Houses, Fire Emblem Musou: Fuukasetsugetsu | Fire Emblem Warriors: Three Hopes
16 Aug 2022
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Summary
Marianne von Edmund finds herself with questions after the Battle of Garreg Mach that can only be answered by one person -- who is, unfortunately, in no state to answer them.
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Maybe I Didn't Step On The Cat by KatsuraTsuruya (CYAthha)
Fandoms: Dangan Ronpa - All Media Types, New Dangan Ronpa V3: Everyone's New Semester of Killing
25 Jul 2022
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Summary
Kaede Akamatsu had killed Rantaro Amami, and gone to her execution with her head held high.
So why was she still alive? Why was she being held, as best she could guess, beneath the dorms?
And what did her blue-haired captor want from her...?
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you take my self, you take my self control by KatsuraTsuruya (CYAthha)
Fandoms: Persona Series, Persona 3
08 May 2021
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Summary
Pure self-indulgent Yukari+Fuuka/Mitsuru hypnokink content set as the SEES crew approaches graduation. (Mitsuru is still at the dorms to perform basic administrative tasks don't worry about it.) I'm not even going to try to dress this up as being for any purpose except bad smut purposes.
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Summary
Kuon Ichinose takes her companion on what was meant to be a sightseeing taxi of Tokyo -- unusual for a native. Her taxi driver, it turns out, is a man much like her. They're both observant, clever people, trying to put themselves back together.
They can't help but pick each other apart.
(Persona 5 Royal and Strikers spoilers.)
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Sumire Yoshizawa asks to borrow Leblanc's kitchen to make a nice meal to welcome Futaba back to Tokyo after Futaba's summer road trip and Sumire's summer gymnastics events -- and to build back her own cooking stills, still kind of a jumble after everything that happened last school year.
This may or may not be both:
A) a plan to get Futaba to eat healthier without needing to lean on Sojiro for curry all the time, and
B) buildup to asking her out for a date.
Sojiro observes.(The first chapter contains no Futaba but rest assured we'll get there.)
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Danganronpa 4: Paradise on the Hopeful Planet by AyuOakhay, KatsuraTsuruya (CYAthha)
Fandoms: Dangan Ronpa - All Media Types
02 Feb 2021
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Summary
The world has begun to see a hopeful peace after the end of the Tragedy. Hope’s Peak Academy graduate Asuka Okuma, the Ultimate Wildlife Photographer, has been living off the grid for most of it and just heard the good news. When she receives a letter inviting her to the reunion cruise of her class, Class 75, she thus doesn’t think twice about going--but the depths hide everything, including ultimate despair. Soon, Asuka and her fifteen classmates will find themselves aboard the submarine SSDN Paradise, caught up in the nightmare of an undersea mutual killing game: the Killing School Reunion, hosted by none other than... Monokuma?!
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Our Lady's Tears by KatsuraTsuruya (CYAthha)
Fandoms: Dangan Ronpa - All Media Types, Super Dangan Ronpa 2, Dangan Ronpa 3: The End of 希望ヶ峰学園 | The End of Kibougamine Gakuen | End of Hope's Peak High School
13 Feb 2019
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Summary
Mikan Tsumiki, desperately needing to be needed, asks Peko Pekoyama on a date.
Peko Pekoyama, not quite sure how to build a life for herself outside of her value to others, accepts.
They stumble forward together, in the deep shadow of their mistakes.
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Rotten Fruit by KatsuraTsuruya (CYAthha)
Fandoms: Dangan Ronpa - All Media Types, Super Dangan Ronpa 2
07 Feb 2017
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Summary
Mikan Tsumiki attempts to do the one thing she can still do for her departed beloved.
An interpretation of a scene and a half implied by Chapter 6 of Danganronpa 2. I'm not really sure why I wrote this.