RKmatsu
Fandoms
Recent works
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Sonic the Hedgehog: Soul Hunters by NovaCharles, UnknownWhisper (RKmatsu)
Fandoms: Sonic the Hedgehog - All Media Types, Sonic the Hedgehog (Video Games), Sonic the Hedgehog (Archie Comic), Sonic the Hedgehog (IDW Comics), Sonic the Hedgehog (Live Action Movies), Adventures of Sonic the Hedgehog (Cartoon), Sonic Boom (Cartoon), Sonic Underground, Sonic the Hedgehog (Manga 1992), Sonic the Hedgehog: The Movie (1996)
09 Apr 2024
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Summary
Centuries have passed since the human race has nearly died out and the race of animal-human hybrids known as “Mobians” came to be. And yet as society improved for the better and the worse, tragedy still struck when, 5 years ago, an event called The Great Tragedy that was instigated by Dr. Ivo “Eggman” Robotnik happened. Many innocents and those who attempted to fight back against him died or were never heard of again.
Years later, a certain blue hedgehog with super speed gains the ability to generate a shield with his own blood, unaware that he might be the key to Eggman's fall...and also the hero Neo-Mobius needs. In this new take of SEGA’s popular yet polarizing game series, spanned into many various adaptations, another new, different story of Sonic the Hedgehog is about to begin.
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The Illegal Hero, Osomatsu-San by NovaCharles, RKmatsu
Fandoms: おそ松さん | Osomatsu-san (Anime), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, おそ松くん| Osomatsu-kun (Anime 1988)
08 Jan 2024
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Summary
To be one of the few people in Japan to be born with a Special is a blessing and a curse: the ability to fight crime or to have a power to make life easier is cool but to be targeted by criminals out for you is a curse. The Akatsuka Ward is one of the many areas filled with such people, making it more susceptible to such danger than other wards.
The Matsuno siblings are among the few people who have such power, but most would rather have normal lives as civilians while keeping their Specials a secret to many. However, when all 6 find their individual lives in danger by the Black Factory, an organization long thought to be gone, it's all up to them to become vigilantes to stop them but what starts off as a simple mission to protect the things and people each one cares about as they figure out what plans the Black Factory have in store, evolves to something more complicated and greater than they can anticipate as new enemies and friends are made. After all, hiding your vigilantism, identity and all, from the public is easier said than done.
Discord server: The Illegal Server
*Chapter 24: Writing in Progress*
Series
- Part 1 of The Illegal Hero, Osomatsu-San
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Summary
It's been a year and a half ever since anyone heard anything from the Matsuno brothers. When Iyami comes back after a long vacation to France, he gets greeted with massive changes due to Akatsuka ward being split into 6 different districts. Now its up to him, Chibita, Totoko and some other folks to find the sextuplets and attempt to bring things back to normal.
Fix-it of the Improper AU from the Season 2 premiere where everything, characters and all, has changed for the better or worse. Chaos, angst and humor will ensue, yours's truly.
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Summary
When Iyami comes back after a long vacation, he is greeted with changes. One of the big changes, however, is that the Akatsuka Ward has been divided into 6 different districts, each one ran by one of the sextuplets. Now it's up to him, Chibita, Totoko and a few others to bring the Matsunos back to their senses and hope things go back to normal...somewhat.
Massive fix-it of the Improper AU from the Season 2 premiere where everything, characters and all, has changed for the better or worse. Chaos, angst and humor will ensue, your's truly.
EDIT: Dead fic; a rewrite is in the progress!
Recent series
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The Illegal Hero, Osomatsu-San by NovaCharles, RKmatsu
Fandom: おそ松くん| Osomatsu-kun (Anime 1988), おそ松さん | Osomatsu-san (Anime), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia
08 Jan 2024
Summary
An original Ososan AU with a power system similar to MHA, a plot and overall vibe similar to Persona 5, other inspirations include Jujutsu Kaisen, Chainsaw Man, Jojo Part 4, Fullmetal Alchemist Brotherhood and MCU Spiderman alongside a slew of others. It is not linked to the canon series and the two movies, though small homages to canon will be made. While the Matsus are still the MCs, the spotlight rotates on the many characters, canon and OCs exclusive to this AU alike, of the story time and time again.
The main meat and potatoes is all on action, the many POVs of other characters, secret identities and the ever growing plotlines that gradually start to unravel and intertwine with one another, with the budding romance being second banana. CW in that there are mature content including implied rape and abuse plus gore.
- Words:
- 315,990
- Works:
- 1
- Bookmarks:
- 2
Recent bookmarks
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Times Like These by KipRussel
Fandoms: ジョジョの奇妙な冒険 | JoJo no Kimyou na Bouken | JoJo's Bizarre Adventure
20 May 2023
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Summary
He doesn’t notice the tears freely falling until Irene takes his hand. They pool down the side of his face and splash across his and her palm. He meets her eyes, the same ones he’s known all this time, blinking bleary tears away.
“Of course you can come with me. Anything you need, okay? We’ll help you.” She squeezes his hand gently. “Emporio, will you join us?”Emporio has lost his family twice over. He's determined not to lose them a third, no matter what's changed, no matter who's gone.
Bookmarked by RKmatsu
01 Nov 2025
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Astray by Bibi_Likes_To_Write
Fandoms: Super Mario & Related Fandoms, Super Mario Bros. (Video Games)
20 Oct 2025
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Summary
After being knocked out of the sky on a mission with the Koopalings, Bower Jr. is left to fend for himself in a forest he knows nothing about and with no idea how to get home, and ends up in places and… tolerating people he wouldn’t have thought he would.
‼️Slow to Update‼️
Bookmarked by RKmatsu
20 Sep 2025
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What It Means to be an Elder Brother by orphan_account
Fandoms: おそ松さん | Osomatsu-san (Anime)
27 May 2024
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Summary
Accompanied by a cigarette and the cold April wind, Osomatsu spends a long night outside waiting for his youngest brother Todomatsu to return home after one of his usual dates. It’s tedious, it’s boring and to be honest, he would rather be asleep. Despite these nights where his thoughts seem to drift into the dark and miserable, he wondered why it was even worth staying up, but a brief confrontation with the youngest tells Osomatsu something doesn't quite add up, faced with the reality of his own inadequacy and failings as an elder brother.
Bookmarked by RKmatsu
27 May 2024
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Trailing Footprints Made of Cinder and Ash by LadyNightLark
Fandoms: 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Manga), 鬼滅の刃 | Demon Slayer: Kimetsu no Yaiba (Anime)
22 Nov 2025
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Summary
While Nezuko Kamado travels, she doesn't realize that not all fights are left without consequences.
See how the aftermath of her adventures leaves ripple effects on the places she's visited and the people she's yet to meet.
(Companion Piece to Children of Fuchsia Light and Demon Fire)
Series
Bookmarked by RKmatsu
29 Feb 2024
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Yellow, Purple, Red, Green by itjustbe_sydney
Fandom: Mario - Fandom, Super Mario & Related Fandoms, Super Mario Bros. (Video Games)
01 Aug 2025
Summary
Collection of stories that focuses on the two sets of brothers.
Mushroom Kingdom raised Wario and Waluigi, both working through past issues. New arrivals Mario and Luigi, who are give the title of 'Heroes' with no clear given reason why.
One set asked to act as mentors to the strange world. The other trained to carry the weight of the issues that arise. It was a weird dynamic. But weirder families have been found.
- Words:
- 171,031
- Works:
- 14
- Bookmarks:
- 76
Bookmarked by RKmatsu
11 Apr 2023