Mrosomatsu Stories

Once upon a time there was a lovely young princess. Her live was filled with love and joy when suddenly an evil queen took over her kingdom. When she was forced to flee...

One year. It took you one year to realize it. Of course, not on your own. Something, well, someone helped you. -- This takes place after "Innocence". Read that...

Just a book with characters I love and have questionable types that I find attractive.

There's been some sort of accident. Karamatsu wakes up, cold and confused in the Matsuno household. Everyone is acting so strange or was he the one acting strange? He k...

Yeah, you read the title 🍋

(I actually posted this story in early 2017 and only just now noticed an UNFORGIVABLE grammatical error so that's why it says it was published in 2019. I'm working on a...

Being a cat idol was not the most original idea in the world, but [Reader] knew they sucked too much ass to care. Why should they? Someone who spent their days working a...

Karamastu dies. Will his brothers realize? Stay tuned to find out.

Years ago Ichimatsu ran away from home. After graduation he did just that, no one could find him, he left without a trace. Where did he go? No one knows. Why did he lea...

You want to Roleplay Osomatsu san? Want to be apart of these boys life? Will you come to the right story. Please open the story to see the information! *ROLEPLAY IS CUR...

It's just a small short story (taken from ep 24) written from Osomatsu's point of view. Content: PG-13 -some angst -depression/hopelessness theme -language -some vi...

This is a fanfiction happening in an alternative universe, where Anthropomorphic Animals and Mythical Creatures lives with humans, but in segregation, like in the era of...

Read the story of a girl named Lauren who is 1/8 human and 7/8 dragon who uses portals to different anime, and sometimes books, worlds trying to bring peace between huma...

just a bunch of weird Memey shit involving Karamatsu that I randomly think of and as things that me and my friends have said throughout the day bc kara is best boi. (his...

The habit of Karamatsu looking into a mirror isn't unusual, but the reasoning is deeper than the other Matsus would've expect. °°°° I've been interested in Karamatsu an...

This is it. Choromatsu is going to die right here.

This is my very first Osomatsu-san fanfiction, just for you, karamatsu boys and girls! You get to hear, for the first time ever, Karamatsu singing you one of his lullabi...

Todomatsu is upset that his sugar daddy said no to him, and Karamatsu is there to provide what he needs.

Just a fun little story! Read, or don't.