1 - 20 of 38 Works in Seth (Under Night In-Birth)
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Sailor Under Night Season 3 by XrayOmega8
Fandoms: Bishoujo Senshi Sailor Moon | Pretty Guardian Sailor Moon (Anime & Manga), Persona 5, Under Night In-Birth (Video Game)
04 Oct 2025
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Series
- Part 3 of Sailor Under Night
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The Wheels of Fate are turning by Kingtallzilla
Fandoms: BlazBlue Series (Video Games), Persona Series, Under Night In-Birth (Video Game), RWBY, Arcana Heart (Video Games), 閃乱カグラ | Senran Kagura, Akatsuki Blitzkampf
04 Oct 2025
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Summary
The war Carl Clover started is over. The multiverse still isn’t safe.
As fractured timelines spiral out of control, long-forgotten warriors resurface, old alliances fracture, and new powers rise to fill the void. But something deeper than war stirs beneath the chaos—something tied to the very mechanisms of fate itself.
With memories fading, realities colliding, and destiny twisting into something unrecognizable, the survivors of the last collapse must choose: fight for control, or fall into entropy.
The wheels of fate are turning—and no one escapes their spin.
Series
- Part 3 of BlazBlue: Cross Rogue Effect
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Midnight Crimson by TwiliRoseHaley
Fandoms: Under Night In-Birth (Video Game), Persona 3
03 Oct 2025
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Summary
An alternate path to Under Night In-Birth- Kuon's return got the attention of an old foe of another called Wildcard, and an unexpected alliance is formed... For the worst. How do you fight those who don't care about dying, if you do not wish to take a life? And what is going on with Orie...? How can Hyde Kido, Seth and Linne stop Kuon when he has a whole cult following him into battle?
- Language:
- English
- Words:
- 4,024
- Chapters:
- 1/?
- Hits:
- 29
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The Unknown Actor - The Final Night by ThatGuySittingintheCorner
Fandoms: Under Night In-Birth (Video Game)
01 Oct 2025
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Summary
System Celestial, Kuon has made his intentions clear. To merge the world with the Abyss, endangering the world with endless voids reaking havoc and destruction. For this Final Hollow Night, the most powerful voids and In-Births gather in the Night to continue the cycle of violence and power. Against these overwhelming odds, follow three heroes as they embark in the Night to stop Kuon and his ambitions.
An adaptation of UNI2
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Dramatical Wonder by TwiliRoseHaley
Fandoms: Persona 5: The Phantom X (Video Game), Under Night In-Birth (Video Game)
06 Sep 2025
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Summary
Just a little story I came up with because Wonder's outfit (and All-Out-Attack pose) made me think of Seth from Under Night In-Birth.
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The chemeti and her Assassin by Yomanitsjojo (That_Writer266273373747)
Fandoms: Under Night In-Birth (Video Game)
09 Aug 2025
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Summary
Seth finds himself in a conflicting situation involving a certain "loud misfortune"....
That he deep down..... Doesn't consider it a misfortune- Language:
- English
- Words:
- 1,657
- Chapters:
- 1/3
- Hits:
- 8
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Abyssal Fate by TwiliRoseHaley
Fandoms: Under Night In-Birth (Video Game), 原神 | Genshin Impact (Video Game)
29 Jun 2025
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Summary
After Hilda defeat Kuon, things only went downhill. The Night Blade was completely destroyed and almost everyone was either in hiding or dead, or afraid. Then a twist of fate leads to Seth, the only living member of the Night Blade, falling to what should have been his death, but instead, what was his new life, and the beacon he sought- hidden beyond the darkness of another Abyss and in a world different from his own, formed by the wills of new allies. A hand offers him friendship and companion ship, and an escape from the darkness he thought had no end, through a land of winter, snow and love.
- Language:
- English
- Words:
- 1,573
- Chapters:
- 1/1
- Kudos:
- 1
- Hits:
- 27
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Summary
大概是hyde和seth之间有一点误会
- Language:
- 中文-普通话 國語
- Words:
- 5,617
- Chapters:
- 1/1
- Hits:
- 18
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Can't Escape From Crossing Fate by Kingtallzilla
Fandoms: BlazBlue Series (Video Games), Persona Series, Under Night In-Birth (Video Game), RWBY, Arcana Heart (Video Games), 閃乱カグラ | Senran Kagura, Akatsuki Blitzkampf
17 Apr 2025
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Summary
The boundary is broken. The keystone is shattered. And across worlds, chaos begins to bleed through the cracks.
Carl Clover, armed with Nirvana and an army of Nox Nyctores-style constructs, has stepped beyond the line of no return. Rachel is gone. The multiverse is splintering. And the survivors of BlazBlue, Persona, Under Night, Arcana Heart, Senran Kagura, and Akatsuki Blitzkampf will soon find themselves caught in a war they never expected.
The crossing of fates has begun.
Series
- Part 1 of BlazBlue: Cross Rogue Effect
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Sailor Under Night Season 2 by XrayOmega8
Fandoms: Bishoujo Senshi Sailor Moon | Pretty Guardian Sailor Moon, Persona 5, Under Night In-Birth (Video Game)
10 Apr 2025
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Summary
Usagi, her friends and Tonmma was now in 9th grade, as they continue to defend the world from any threat Usagi begin to feel her love for Tonmma to grow stronger, but many problems and new enemies were ready to put an end to the heroes's journey.
Series
- Part 2 of Sailor Under Night
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Summary
It's Seth's birthday and the cold winter air and snow make him feel nostalgic for the birthdays he celebrated with his mom. It's been ten years since he celebrated his birthday that he just plans to stay inside but Hyde isn't having it. Hyde wants to celebrate but is Seth ok with celebrating his birthday when the person who celebrated with him every year is no longer here?
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Today's Menu for the Kido Family by ThatGuySittingintheCorner
Fandoms: Under Night In-Birth (Video Game)
25 Dec 2024
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Summary
A parody take on Today's Menu for the Emiya Family. Follow Hyde's daily life as he cooks various dishes for his friends and loved ones. Set in the continuity of The Unknown Actor. Also just an excuse to browse all kinds of delicious foods to try making.
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Summary
Seth comes over to Hyde’s house to stay the night. Shenanigans ensue (sex).
Another fic I wrote because I was horny. I do think it turned out quite a bit better than the last one though.
It was named after a Weezer song because I didn’t know what to title it. I didn’t like it so I changed it to another Weezer song (and genderbent it or whatever) -
Have a Great Summer! by ThatGuySittingintheCorner
Fandoms: Under Night In-Birth (Video Game)
17 Aug 2024
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Summary
A series of snapshots as the Under Night cast (the good guys anyway) enjoy a well earned vacation at the beach.
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Sailor Under Night Season 1 by XrayOmega8
Fandoms: Bishoujo Senshi Sailor Moon | Pretty Guardian Sailor Moon, Persona 5, Under Night In-Birth (Video Game)
12 Aug 2024
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Summary
In the year 2013, the beginning of the new generation of Sailor guardians was about to see the day but at the same time many forces of darkness was looking for the legendary hero, this is the origin of a new story.
Series
- Part 1 of Sailor Under Night
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Summary
“I know I was the one who suggested we act like strangers but you don’t have to be so cold about it.” He sighs quietly, “Since it's just the two of us it's ok to drop the act. So, how did it go with the target?”
Seth decides not to retort and say ‘It isn’t an act,' he needs to get this over with and treat his lacerations. The ache of his shoulder wasn’t lessening and he could feel blood starting to drip down his arm and back. “He's been immobilized. He won’t be causing any trouble for you any time soon.”
Chaos hums, letting silence fill the air before he cooly responds, “And your shoulder?”
Seth couldn’t help but glare, but also wince, at being caught so quickly. From what Seth knew and observed about the man he was always analyzing and calculating. He most likely knew something was wrong the second he spotted the assassin. Really, he shouldn’t be surprised that Chaos noticed his injury. The question now was what he was going to do now that Seth was in a weakened state?
Or
Seth gets injured and Chaos helps patch him up.
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Summary
Uhh, they study at Seth's house, Hyde gets horny, then they fuck. That's the fic.
This is the first time I've ever written smut, so it probably sucks lol.
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Summary
unib x reader headcanons because i felt like it (may be a lil ooc oops)
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The Unknown Actor by ThatGuySittingintheCorner
Fandoms: Under Night In-Birth (Video Game)
06 Jun 2024
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Summary
An adaptdation of Hyde's Arcade Route from Under-Night 1. Uses elements from other Arcade Routes as Hyde fights his way to reach Linne and stop Paradox from becoming a Re-Birth.
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I'm prepared to sacrifice my life, are you? by Lethven
Fandoms: Under Night In-Birth (Video Game)
21 May 2024
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Summary
With the final Hollow Night and the final battle against Kuon fast approaching, Seth asks Hyde a difficult question.