1 - 20 of 54 Works in Good Sibling Saiki Kusuke

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  1. Tags
    Summary

    Kuusuke still remembers that day. That stupid, stupid day.

    He still wishes he could've done something. As a genius, a son, and most importantly a big brother, maybe he could've saved him. Maybe he could've been a better person to his brother.

    But now, as the fog in his twisted mind starts to clear, it's already too late.

    Saiki Kusuo is dead.

    OR: An AU where Kusuo never went to PK Academy.

    PLEASE give me criticism, PLEASE.

    ---

    ON HIATUS

    Language:
    English
    Words:
    2,050
    Chapters:
    4/?
    Comments:
    12
    Kudos:
    28
    Bookmarks:
    4
    Hits:
    325
  2. Tags
    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.

    Language:
    English
    Words:
    33,479
    Chapters:
    11/?
    Comments:
    68
    Kudos:
    145
    Bookmarks:
    13
    Hits:
    2,545
  3. Tags
    Summary

    You pretend to be a stray cat to try and get away from your sucky life, but then opportunity strikes with the boy you like.

    Let’s see if you can keep this double life up and snag the boy of your dreams.

    Language:
    English
    Words:
    2,366
    Chapters:
    1/?
    Comments:
    1
    Kudos:
    3
    Bookmarks:
    1
    Hits:
    95
  4. Tags
    Summary

    'Cause sometimes, memories can bring someone soul back.

    Series
    Language:
    English
    Words:
    459
    Chapters:
    1/1
    Kudos:
    44
    Bookmarks:
    4
    Hits:
    301
  5. Tags
    Summary

    “Weren't those three little demon-spawns bad enough?” Top-hat-monocle-stashe sniffed, the state of whose teeth reminded Kusuo of the pack of bubble-mint gum stored in Mama’s purse.

    His friend Snobby-Butt-Chin only sighed as he replied,

    “By the Celestial Dragons, it would be in the royalty’s best interest to accelerate the date of the fire”

    Okay, Kusuo feels like he’s missing some context here...

    “Certainly, cleansing the filth of this country before more mutant trash rise up from the dump is long overdue... by the crown…. floating babies and robot wielding toddlers now..? That stretchy brat was strange enough…”

    See, Kusuo’s not an eavesdropping bad boy! He can’t help that he’s got telepathy and that these old guys are gloating so freely after a tiny telepathic nudge!

    And that’s so rude of them, him floating isn’t as weird as that dudes stache! Maybe Kusuo should help his appearance with that using his powers…

    (Wherein baby Kusuo and Kusuke from Saiki K accidentally travel to the One Piece verse during the ASL flashback and chaos ensues...finally, my babies don't feel so alone in being so superhuman 🥲)

    Series
    Language:
    English
    Words:
    794
    Chapters:
    1/?
    Comments:
    4
    Kudos:
    31
    Bookmarks:
    4
    Hits:
    295
  6. Tags
    Summary

    “You knew I would fail, from the very beginning. You knew I would regain my powers.”

    Kusuke finally turned around only to observe Kusuo’s perplexed face better. He couldn’t help the smile that pried and the laugh which teased his lips.

    – I did not expect you to fail, because you didn’t. Rest assured, it was not some evil masterplan to make you taste normality without actually granting you it - though, it’s very smart isn’t it ?

    OR : Post-meteor fic where Kusuo confronts his brother about his powers coming back.

    Language:
    English
    Words:
    1,385
    Chapters:
    1/1
    Collections:
    1
    Comments:
    1
    Kudos:
    60
    Bookmarks:
    6
    Hits:
    409
  7. Tags
    Summary

    Just TDLOSK, but with Kusuke!

    Language:
    English
    Words:
    779
    Chapters:
    1/1
    Comments:
    3
    Kudos:
    37
    Hits:
    521
  8. Tags
    Summary

    What if there was a universe? A universe where a third Saiki exists? Wait-She's average? Boring.
    Meet the lovely Kyouka Saiki: no psychic powers, no genius IQ, just a painfully normal girl stuck between two extraordinary brothers.

    Language:
    English
    Words:
    4,853
    Chapters:
    2/16
    Comments:
    5
    Kudos:
    30
    Bookmarks:
    4
    Hits:
    317
  9. Tags
    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)

    Language:
    English
    Words:
    41,190
    Chapters:
    27/?
    Collections:
    2
    Comments:
    350
    Kudos:
    2,524
    Bookmarks:
    305
    Hits:
    35,268
  10. Tags
    Summary

    What if The first other psychic that Kusuo met was not Toritsuka, but his brother Kuusuke? A story of the family dynamics within the Saiki family, centered around Kuusuke's view point and how Kusuo became the normal-craving teenager we came to know him.

    A prequel to Secrets if so desired.

    Language:
    English
    Words:
    22,085
    Chapters:
    9/11
    Comments:
    96
    Kudos:
    366
    Bookmarks:
    55
    Hits:
    5,153
  11. Tags
    Summary

    In the contemplation stage, individuals have recognised their issues but remain ambivalent about actually changing. This stage is characterised by rampant internal conflict and difficulty committing to fix their problem, despite having realised that it exists.

    Saiki Kusuke opens his eyes.

    Series
    Language:
    English
    Words:
    5,006
    Chapters:
    1/1
    Comments:
    7
    Kudos:
    101
    Bookmarks:
    14
    Hits:
    549
  12. Tags
    Summary

    “That’s nice” She said awkwardly, “Erm, well you two can sit next to Saiki at the back,”

    ‘Saiki?’

    ‘Saiki?’

    Both of their heads raised to look at him.

    Maybe he did have something to do with their mission.

    Language:
    English
    Words:
    5,199
    Chapters:
    11/?
    Comments:
    34
    Kudos:
    315
    Bookmarks:
    37
    Hits:
    3,048
  13. Tags
    Summary

    Saiki starts experiencing strange reactions-his chest tightens, his stomach warms, and objects catch fire-whenever he's around Teruhashi. Confused, he asks Kusuke for advice, only to be told, "You're just horny." Frustrated, Saiki dismisses him but can't shake the feeling.

    Later, after another overwhelming moment thinking about Teruhashi, Saiki decides to try pleasing himself, despite having no idea what he's doing.

    Series
    Language:
    English
    Words:
    2,800
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    128
    Bookmarks:
    10
    Hits:
    3,104
  14. Tags
    Summary

    Saiki Kusuo, also known as Saiki Kuriko, is genderfluid.

    She didn't really PLAN to tell her brother, but here we are.

    Language:
    English
    Words:
    2,398
    Chapters:
    1/1
    Comments:
    37
    Kudos:
    398
    Bookmarks:
    56
    Hits:
    2,019
  15. Tags
    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.

    Language:
    English
    Words:
    22,972
    Chapters:
    8/?
    Comments:
    72
    Kudos:
    331
    Bookmarks:
    55
    Hits:
    4,258
  16. Tags
    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.

    Language:
    Español
    Words:
    1,181
    Chapters:
    1/1
    Comments:
    7
    Kudos:
    51
    Bookmarks:
    3
    Hits:
    915
  17. Tags
    Summary

    He doesn’t know why he protected it. Maybe it was because he knew how important it was to his parents. He didn’t want to make them sad if he harmed it even just by accident. It was far more important to them than he was, so that must be why. There is no way that it was because he was getting attached to it.

    A fic about Kuusuke not being quite sure of this “big brother” thing he has going on.

    Language:
    English
    Words:
    2,214
    Chapters:
    1/1
    Comments:
    25
    Kudos:
    287
    Bookmarks:
    33
    Hits:
    1,421
  18. Tags
    Summary

    Сайки Куске может позволить себе переживать и сомневаться, но только тогда, когда никто не услышит и не увидит.

    Преканон, т. е. Куске ещё на пути к своей канонной личности.

    Language:
    Русский
    Words:
    520
    Chapters:
    1/1
    Kudos:
    9
    Bookmarks:
    1
    Hits:
    67
  19. Tags
    Summary

    Kusuo breaks his limiters and visits Kuusuke, surprised to find that not only does he have company, but he has boyfriends? After accidentally revealing his powers to total strangers, he bonds with his brother. He later finds that his mom is homophobic (which is incredibly surprising) and decides to run away because it just isn't worth it to live at home anymore. Oh, and he starts dating Aiura. A glimpse of Kuusuke's new life in England, and the beginning's of a new life for Kusuo.

    Series
    Language:
    English
    Words:
    5,803
    Chapters:
    1/1
    Comments:
    4
    Kudos:
    36
    Bookmarks:
    6
    Hits:
    554
  20. Tags
    Summary

    Kusuke rambles just a tad bit about Kusuo, except he's mentally normal about Kusuo.

    Language:
    English
    Words:
    194
    Chapters:
    1/1
    Comments:
    5
    Kudos:
    179
    Bookmarks:
    12
    Hits:
    1,568

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