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English
Series:
Part 1 of My Atsushi angst and comfort fics
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Published:
2026-01-04
Updated:
2026-01-04
Words:
681
Chapters:
1/?
Comments:
4
Kudos:
38
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13
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462

When Cosmos Align

Summary:

Atsushi wakes up in a foreign place after the world "destroyed". Once he asked around, he learns that he's still in Yokohama, so it's a bit weird.

He walks to the agency- knowing that he won't die by their hands even though he is their enemy.

But...

The sight of his dopp-his other universe self-stops him temporarily from going inside.

Is the former White Reaper of The Port Mafia going to adapt well to the fact he's in the original universe his former mentor mentioned? Is he going to make smart choices?...

Notes:

I REALLLLYYYY had a baddddddd urge to write a beast fic with B!Atsushi and OG!Atsushi meeting. I tried looking all over AO3 for one, but i couldnt find one. So... after taking off my procrastination cap off, I finally decided to get started on this new fic. I hope its at least somewhat good; I haven't written something in a hot minute. I just haven't had the motivation to grab my laptop and type all these words down. I have so many ideas, but my fingers absolutely refused to write that many. And my attention span is absolute shit so I'm even surprised I wrote my previous fic, "Light That Shines Through Rain" for that long (and its not even finished.) Soooo great. I guess in someway im still procrastinating because I'm not writing chapters for that fic right now. Uhhhh just call it a hiatus if it makes you readers feel any better. ANYWAYS. LET ME STOP YAPPING AND JUST READ THE FIC I MADE BECAUSE ITS PRETTY FUCKING GOOD! (hopefully...)

Hopefully i didn't drain your energy reading the notes before the fic ;)

(See the end of the work for more notes.)

Chapter 1: "Piano Man"

Summary:

"It's a pretty good crowd for a Saturday, and the manager gives me a smile. 'Cause he knows that it's me they've been coming to see to forget about life for a while."

Chapter Text

A nice, blue sky. Birds flying about, clouds moving. In the distance, there’s children laughing and playing. That’s the first thing The White Reaper of an organization called The Port Mafia notices.

“...Where… am I?” He thinks to himself. The world—- for once, seems oddly peaceful. Is he even in Yokohama anymore?

Let’s rewind a bit to give you all context….

The Decay of Angels somehow managed to write in a special object an ability user made many centuries ago called “The Book”. “The Book” basically made whatever you wrote come true, as long as it was in novel form. The White Reaper—- of the orphanage was called in to help with The Port Mafia and The Agency in aiding their help in saving the world; where Dazai, The White Reaper’s former mentor, committed suicide while entrusting him and an agency member who goes by the name of Akutagawa Ryuunosuke the stability of the universe. 

Since The White Reaper—Atsushi, is one of the only people in the world that knows about the different dimensions and different universes, he has a duty to fulfill in making sure the world doesn’t collapse and making sure no prying ears hear of such news.

Atsushi ditched The Port Mafia to seek help after Dazai’s suicide at his old orphanage, and he only intervened during times of need. But… Fyodor brought two divine swords, Tsuki-No-Gozen and Ame-No-Gozen, together and created a huge rift in the universe. Timelines got mixed up, planets collided, it was a huge cosmic cataclysm. 

But… Atsushi isn’t there. He isn’t in the world–universe where it was getting destroyed. Was God himself giving him a second chance? Perhaps.

 

Atsushi observes his surroundings, there’s a huge grass field with a children's playground next to it. It seems like he’s in a park, but “where?” is the question. He approaches an elderly woman, one who is observing her child play at the nearby playground and places a friendly smile on his face.

“Hello, ma’am. This may seem odd, but do you know what place this is?” He asks in his sweet tone, giving her enough distance for her to feel comfortable.

She glances up, giving Atsushi a confused expression before answering, “Ah… We are at Yokohama Children's Park…. Are you okay, young man?” She asks, concerned as she lays her fingers over her lap in a sophisticated way.

“So, I am in Yokohama…” He thinks to himself. He snaps out of his thoughts once the lady asks the concerned question, he lets out an awkward laugh, shaking his head, “Ah… No, I’m alright. I just… took a nap and woke up here...” He knew it was a horrible excuse, but he had no reason to open up to an old lady.

He thanks the old lady for her help, bowing slightly as he leaves the park. Fortunately, The Port Mafia made him memorize all the streets and corners, so he knows where he’s at. The best option would be for him to go to the agency. He wouldn’t be a friendly face, sure, but maybe they’d have some answers for him—since they don’t actually harm people.

It takes him awhile till he arrives at the front of the agency, behind a tree because he doesn’t want anyone to notice his appearance right away. In his words, he’s trying to be inconspicuous. Suddenly, he catches a glimpse of someone who looks completely identical to him! He stills, breathing labored as he stares at the person— who is currently feeding stray cats in front of the building. And another very familiar person with brown hair and brown eyes walks out of the building, waving to his doppelganger with a smile that he has never seen before…

He remembers what his former mentor told him…

Different universes. Different timelines. Infinite worlds.

Then— it suddenly dawns on him. This is…

 

The “original” him. The “original” Atsushi—universe.

 

This realization alone is enough to make him lightheaded. But now that the puzzle pieces have pieced together, what should his first move be? Should he enter the agency?...

Notes:

I WANT ATSUSHI AND BEAST ATSUSHI TO MEET. SEE IT IN THE NEXT CHAPTER PLEASE BECAUSE I CANT WAIT!!!!!!!!!!!!!!

Maybe Dazai and B!Atsushi will interact too?..

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