MasterKo | Archive of Our Own

Main Content

While we've done our best to make the core functionality of this site accessible without JavaScript, it will work better with it enabled. Please consider turning it on!

Choices

Pitch

Switch

Fandoms

Expand Fandoms List Collapse Fandoms List

Recent works

Pokémon Sucksmas Present by Masters Ko-llections (MasterKo)

Fandoms: Pocket Monsters: Diamond & Pearl & Platinum | Pokemon Diamond Pearl Platinum Versions
27 Dec 2025
Tags
Summary

After Mars stole the show on Thanksgiving, Cynthia decides to come up with a fun surprise for Christmas.

Dawn's too Lucky it’s unfair

Sequel to the fic from the last collection Pokemon Sucksgiving Suprise

Series
- Part 8 of Dawn&Cynthia
Language:

English

Words:

754

Chapters:

1/1

Collections:

1

Kudos:

1

Bookmarks:

1

Hits:

346
Zephyra's New Job might just Ruin Her by MasterKo

Fandoms: Original Work, League of Legends
19 Dec 2025
Tags
Summary

Zephrya has been an aspiring teacher who's finally gotten a job! Well, she's only a substitute teacher, but it is at the prestigious Bursting Burch, and if she can get a full-time position there, she will be educating the brightest girls from across the realms! She really can't afford to mess this up, but she's confident she's got this. She can handle whatever these girls can throw at her. She's gonna be the best Sub there is. Her student, Miss Sarah Fortune, agrees wholeheartedly.
How long will Zephrya last against Sarah's relentless humiliations before something breaks?

This is part of my Futa School prompt request one-shot series. Check out the rest if you're interested.

Series
- Part 27 of Bursting Birch Boarding School has a Futanari Problem.
Language:

English

Words:

18,923

Chapters:

5/7

Collections:

1

Comments:

7

Kudos:

23

Bookmarks:

11

Hits:

4,166
Cortanas adventures in the digital world by Master-Ko-Mild (MasterKo)

Fandoms: Digimon - All Media Types, Halo (Video Games) & Related Fandoms
18 Dec 2025
Tags
Summary

While trapped on the Forward onto Dawn, Cortana has been cataloging human and Forerunner history. Frankly shes been doing anything to keep her mind going while trapped alone on this ship. So when she finds a strange mystery from the early 2000's human history, she delves right in.

And when that mystery leads to a whole new world, she jumps headlong into this strange digital world. It might just feel like home to an AI like her. But the digital world only tends to reach out when there's a problem it can't solve. Can Cortana handle herself with her new partner and without John?

Language:

English

Words:

3,676

Chapters:

1/?

Comments:

8

Kudos:

5

Bookmarks:

3

Hits:

121
Bursting Birch/ Corrupt Youth Futa Askbox by MasterKo

Fandoms: Multi-Fandom, Original Work
16 Dec 2025
Tags
Summary

Bursting Birch is the name of my fantasy Boarding school that is plagued (Or Blessed) by a massive population of Futa students.

It's an open Prompt fic that I work on in my spare time, but I am kinda a slow writer. So if you've enjoyed any fics from that series and you wanted to ask anyone a question…here you go!

I wanted to make this a place to answer those without having to write a whole fic.

Series
- Part 23 of Bursting Birch Boarding School has a Futanari Problem.
Language:

English

Words:

13,031

Chapters:

15/15

Collections:

1

Comments:

203

Kudos:

42

Bookmarks:

8

Hits:

8,916
Halloween Party Futa Hijinks by MasterKo

Fandoms: Multi-Fandom, Fire Emblem Series, One Piece (Anime & Manga), Highschool DxD (Anime), Hazbin Hotel (Cartoon), The Legend of Zelda: Breath of the Wild/Tears of the Kingdom, RWBY, DCU (Comics), Marvel, Avatar: The Last Airbender (Cartoon 2005), Fate/stay night & Related Fandoms, Pocket Monsters | Pokemon - All Media Types, Fairy Tail, Naruto (Anime & Manga), Bleach (Anime & Manga), Kill la Kill (Anime & Manga), 炎炎ノ消防隊 | Enen no Shouboutai | Fire Force (Anime), Winx Club, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Bayonetta (Video Games), Arcane: League of Legends (Cartoon 2021), League of Legends, Undertale (Video Game), Dragon Ball, Mage & Demon Queen (Webcomic), Super Mario & Related Fandoms, ダンジョンに出会いを求めるのは間違っているだろうか | DanMachi | Is It Wrong to Try to Pick Up Girls in a Dungeon? (Anime), 悪魔城ドラキュラ奪われた刻印 | Castlevania: Order of Ecclesia, 食戟のソーマ | Food Wars! Shokugeki no Soma, Boruto (Anime & Manga), Dark Deity (Video Game), 陰の実力者になりたくて！ | The Eminence in Shadow (Anime), Fate/Grand Order
12 Dec 2025
Tags
Summary

Every Year, the students of Bursting Berch come together to have an absolutely massive Halloween party. It's a tradition that goes back for generations; it's just that this generation is the horniest yet. What could possibly happen putting hundreds of them in one house and telling them to go crazy? Probably nothing. The teachers are there to chaperon...Surely they'd stop things from getting out of hand? They wouldn't fall victim to horny students, would they?

Is it too late to post a Halloween fic? No, shut up.

This is part of my Futa School prompt request series. Check out the rest if you're interested. And Vote Here if you wanna tell me what I'm writing for Christmas

Series
- Part 25 of Bursting Birch Boarding School has a Futanari Problem.
Language:

English

Words:

23,638

Chapters:

3/3

Collections:

1

Comments:

54

Kudos:

17

Bookmarks:

5

Hits:

5,138

Recent series

Recent bookmarks

Public Bookmark 85
My Body's Just for Her by piesama

Fandoms: Original Work
09 Mar 2023
Tags
Summary

Morgan is popular, attractive, a social star... and a total exhibitionist. She decides she wants to display her body to Taylor, a cute but shy nerdy girl, and ends up developing a lot more feelings than she expected when Taylor's attention drives her absolutely wild!
What starts as a kinky hookup between these two girls blossoms into genuine (though still pretty kinky) love

Language:

English

Words:

13,851

Chapters:

3/3

Comments:

66

Kudos:

462

Bookmarks:

85

Hits:

23,202
Bookmarked by MasterKo

11 Jan 2026
Public Bookmark 90
The Island of Lust by NullnLight

Fandoms: DCU (Comics), Pocket Monsters | Pokemon - All Media Types, Avatar: Legend of Korra, Street Fighter, Marvel, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga), Fairy Tail, Black Clover - Tabata Yuki (Anime & Manga), Akame ga Kill! (Anime & Manga), 閃乱カグラ | Senran Kagura, Tekken (Video Games), Naruto (Anime & Manga), ジャスティス学園 | Rival Schools (Video Games), Ben 10 Series, Kill la Kill (Anime & Manga), Queen's Blade, Dragonaut: The Resonance
14 Dec 2025
Tags
Summary

A Large Crossover story featuring many female characters across franchises.

Korra wakes up in a universe far from her own, ending up on a strange island along with another girl named Nemona. The island was created by a mysterious being called 'the Entity'. In order to leave, Korra and Nemona must complete the tasks given by 'The Entity'. As they begin their journey, the pair meet up with several other women, who they have to get acquainted with. And the ultimate task is to be the Queen of Lust.
Massive Futanari Harem. Special thanks to Mullon for passing images over, even for a few chapters.

Series
- Part 1 of The Island of Lust
Language:

English

Words:

211,799

Chapters:

27/?

Comments:

207

Kudos:

283

Bookmarks:

90

Hits:

33,952
Bookmarked by MasterKo

10 Jan 2026
Rec 1
Fuckathlon: An open AU setting for fanfiction or original works by chemicalcain

Fandoms: Original Work
25 Dec 2025
Tags
Summary

Atlantis is back, and they're really into full contact nude sports. The world is wild about it.

Fuckathlon is an open AU setting for fanfiction or original works. Chapter 1 will detail the core premise, and chapter 2 will pose questions for you to dig into the setting and figure out how to put your favorite weirdos in it.

Language:

English

Words:

1,119

Chapters:

2/2

Collections:

1

Comments:

1

Kudos:

4

Bookmarks:

1

Hits:

34

Bookmarked by MasterKo

08 Jan 2026

Bookmarker's Notes

Hey I helpped make this lets go. I should probably make something in this setting
Public Bookmark 95
Year of Porking by Scrib_eyeSteak

Fandoms: Naruto, Dragon Ball, The Legend of Zelda & Related Fandoms, Persona Series, Dragalia Lost (Video Game), Bishoujo Senshi Sailor Moon | Pretty Guardian Sailor Moon, Dragon Quest Series, InuYasha - A Feudal Fairy Tale, Bleach, Little Witch Academia, Pocket Monsters | Pokemon - All Media Types, Fire Emblem: Kakusei | Fire Emblem: Awakening
01 Nov 2020
Tags
Summary

Celebrate the Year of the Boar with a monthly helping of pork. Updates once a month, no requests.

Language:

English

Words:

34,860

Chapters:

13/13

Comments:

9

Kudos:

222

Bookmarks:

95

Hits:

51,892
Bookmarked by MasterKo

05 Jan 2026
Public Bookmark 3
Pokemon one shot by Astral_johnson

Fandoms: Pocket Monsters: Sword & Shield | Pokemon Sword & Shield Versions, Pocket Monsters: Scarlet & Violet | Pokemon Scarlet & Violet Versions, Pokemon Legends: Arceus (Video Game), Pokemon Legends: Z-A (Video Game), Pocket Monsters: Sun & Moon | Pokemon Sun & Moon Versions
03 Jan 2026
Tags
Summary

Asher stumbles into a arcanine

Language:

English

Words:

5,694

Chapters:

17/?

Comments:

46

Kudos:

14

Bookmarks:

3

Hits:

2,727
Bookmarked by MasterKo

03 Jan 2026