1 - 20 of 23 Works in Protective Saiki Kusuke
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ONE DAY, I'LL DISAPPEAR... by holographicprojector
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
05 Oct 2025
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Summary
In which Kusuo grapples with the conditions of his existence, Touma ignores his revolving door of 'fathers', and Kuusuke's perception of his brother distorts into something unrecognizable.
Series
- Part 1 of SLOW COMES THE DAWN
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A Disastrous Experiment by KaylaGray
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
21 Sep 2025
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Summary
Saiki wakes up with a problem he's never dealt with before. Morning wood. His decision on what to do about it leads to several mortifying interactions he would much rather pretend never happened, and the fallout uncovers burdens he's tried to keep hidden from everyone - including himself.
Like I mentioned in the tags I'm not completely sure how graphic something needs to be to earn the "graphic depictions of violence" warning (I'm very new to AO3) but towards the end of the story I did write a couple somewhat violent scenes. While I don't think I wrote anything that you couldn't find in a shonen anime, I did show a bit more mature content than the Saiki K. anime ever does and at times I used much more candid language to discuss things. See the notes before each chapter for more specific warnings wherever they apply.
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The Disastrous Life of the Saiki Brothers by Iknow_enzo
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
20 Jun 2025
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Summary
Just TDLOSK, but with Kusuke!
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Today, I met a psycho by Not_slay_gurl
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
11 Jun 2025
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Summary
What would happen if a psychic met a psycho? Well, that was what the interaction between Saiki Kusuke and Teruhashi Maika (beloved cousin to Teruhashi Kokomi) seemed to be.
DISCLAIMER: The original anime doesn't belong to me (accept for some original characters)
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im still into you by saikechism
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
05 Jun 2025
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Summary
Teruhashi is planning on confessing to Saiki before leaving high school, and Saiki calls someone special for help.
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Danger by Burralvunti for Hyshl4v4in_Sheao
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
28 Apr 2025
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Summary
On your wrist is a meter of how dangerous your soulmate is which is shown by color and is relative to your own strength. So if you’re strong and your soulmate is weaker compared to you it would show that they aren’t dangerous. Pale green is the least dangerous and dark red is the most dangerous. Underneath the meter is a phrase saying how dangerous your soulmate is. Saiki’s says that his soulmate isn’t a threat. Saiko’s says that his is catastrophically dangerous.
(Updated: 4/28/25)
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Trashy Matchmaker Of PK Academy by Coffee_Jelly00
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K., 백작가의 망나니가 되었다 - 유려한 | Lout of Count's Family | Trash of the Count's Family - Yulyeohan
05 Apr 2025
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Summary
'Making the impossible possible'
That is the motto that our family grew to learn with three per say unique children.
I'm Saiki Kusumi. And you may be wondering what's unique about us Saiki sibling.
Well we just have Kusuke Saiki as our eldest brother who is incredibly smart and is dubbed as 'genius among geniuses'.
Yeah, Kusuke-nii is really smart. He was also the one who invented the limiter for Kusuo-nii, the second child of the Saiki family.
Kusuo-nii is what Kusuke-nii considered as a genius and I do too. Kusuo-nii is a psychic, a powerful one at that. He has a lot of supernatural abilities that makes him unique.
I love my family and while I can be dense sometimes, I know for a fact that they love me too. I love them and especially my big brothers.
And you are probably wondering what's unique about me, read to find out.
Ps: I wanna be a slacker someday.
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"Let me be yours" by Ivy_icy
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
21 Nov 2024
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Summary
The two need to kiss your honor!
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The Will of Fire by xxxTheMachinexxx
Fandoms: 文豪ストレイドッグス | Bungou Stray Dogs, 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
31 Oct 2024
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Summary
On one random day in June, Kusuke goes missing which leads to Kusuo investigating his disappearance after being left behind a strange letter.
What happens when he decides to work with the detective agency to get his brother back?
Takes place in BSD season 1 and after the entirety of Saiki K.
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to the ends of the earth, would you follow me? by rowanexploringtheuniverse
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
15 Sep 2024
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Summary
Post-meteor adventure!
The Psychickers run into another psychic- one with the power to control minds. When Kusuo falls victim and is forced to fight his friends and destroy the city, they find themselves trying to break him out of it. Even if they can, how will they be able to pick up the pieces? In the meantime, they learn a little bit about him and each other, and secrets are revealed.
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A new beginning by Samuugrr
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
08 Sep 2024
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Summary
Saiki Kusuo saves Japan from the meteorite and resumes his life again with his psychic powers, the difference is that now he realized that he can control them.
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My Little Brother Against The World by cinnatime
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
17 Jul 2024
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Summary
Kusuke rambles just a tad bit about Kusuo, except he's mentally normal about Kusuo.
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Maybe in a another lifetime by Just1kiana
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
29 Feb 2024
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Summary
"What are you doing?"
"I'm drawing"
"I can see that, what are you drawing and i can see you're writing on it too?"
"It's a manga, a story about a boy, named saiki Kusuo, he has psychic powers and-"
"Is that your name Kusuo?"
"Yes"
"But psychic isn't some kind of superpower....it's a sickness"
"I know,I'm bored being in the hospital all the time so I wanna write an story about myself but it's like another world! psychic is some kind of power, oh and i have pink hair too!"
"Why is that? Your hair is brown, didn't you said it's about you?"
"Well I always wanted you to color my hair to pink, brown is boring"
"No it's not! I think it looks good on you"
"It's easy for you to say, your hair is blonde"
"That doesn't mean anything, I still like your hair color too!"
"Whatever"
"Hey just don't ignore me! at least tell me what's the story about!"
"Well, it's about...
or
In this au Kusuo is sick, he was always in the hospital and one day he start writing an story about himself but in this story psychic isn't the name of a sickness it's a superpower -
Saiki K Yandere Headcanons by WhyDoWeTryAnymore
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
22 Feb 2024
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Summary
What I think Saiki K characters would be like as yanderes. Updates every Tuesday but might update inbetween.
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𝐒𝐀𝐈𝐊𝐈 𝐁𝐑𝐎𝐓𝐇𝐄𝐑. by AriCristal6
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
16 Feb 2024
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partners in crime by heartless_cinderella
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
27 Jan 2024
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Summary
It hits him then that this is his baby brother. It hits him then that now, he’s supposed to be a big brother, a guardian, someone Kusuo can look up to. If that means setting aside his jealousy and instead trying to give Kusuo the best life possible, then that’s what Kusuke would do.
vignettes of a genius growing up with a psychic:
an au where kusuke is just a little more sane
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(Caffeinated) Coffee by SaturnOnSteroids
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K., 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
25 Dec 2023
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Summary
. . . he supposed being anything remotely close to normal got thrown out the window when he ended up trying to be a hero, of all things.
He just wanted the illusion, okay?
Series
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I promise It'll be okay au by Just1kiana for rowanexploringtheuniverse
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
24 Dec 2023
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Summary
I love the fanfiction and I have so many ideas for it! Here is some of them, more like what if...., showing the more possible ending of it
The original fanfiction👇🏻
https://ao3-rd-18.onrender.com/works/50921977/chapters/128645176
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Dreams, Nightmares, and Every Vision In Between (Kusuo Woke Up) by SeraphMerlin
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K.
09 Oct 2023
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Summary
Kusuo woke up.
Was it a dream, a nightmare, a vision of a possible future, or the true waking world?
Kusuo woke up.
He was trapped in a never-ending loop of waking up within dreams.
Kusuo woke up.
Or did he?
Kusuo woke up.Series
- Part 8 of Merlin's Whumptober 2023
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SCP-5742, formally known as Saiki Kusuo by Ryuks_apple_addiction
Fandoms: 斉木楠雄のΨ難 | Saiki Kusuo no Sai-nan | The Disastrous Life of Saiki K., SCP Foundation
22 Oct 2022
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Summary
After Saiki's Parents died in a car crash, he was devastated. His emotions get out of control, so his brother Kusuke approaches him with an offer to keep the psychic from destroying the world out of grief.
The offer? Turning himself in, to the SCP-foundation, where Kusuke had just started researching Anomalies with other scientists. With nothing left to lose, Kusuo opens a new chapter in his life, this time as a Lab-rat.