1 - 20 of 47 Works by Decadee
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Summary
Dazai left the Port Mafia when he was eighteen, after the news that both his best friend and his annoying partner were dead. Now, a murder mystery in the north baits the Agency, and Dazai is drawn into a puzzle surrounding an elusive fox spirit, a young coroner, and the feeling of something familiar.
Previously: Psithurism
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Chuuya is dead.
Dazai was working on (not) accepting that when Chuuya's ghost pops up in Dazai’s apartment.
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Every day, Chuuya receives a flower from a secret admirer - and he would really rather whoever is doing this wouldn't bother. Especially around Valentine's Day.
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Chuuya made a deal with Mori to prevent Dazai from coming back to the Port Mafia, after the dust from Meursault has settled. Thirty days in isolation and Mori will choose anyone else.
Whumptober 30: “I’m putting all my trust in a half-empty glass”/Burn it down, Alternate prompt: Deal with the Devil.
Series
- Part 29 of Decadee's Whumptober Challenge 2025
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Chuuya thinks he's dying, so he calls Dazai.
Whumptober 31: Gunshot Wounds, Bleeding Out,
Series
- Part 30 of Decadee's Whumptober Challenge 2025
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Chuuya could chart his relationship with Dazai through codes, and messages, and post-it notes. It's cold comfort after Dazai has died.
Whumptober 29: Broken Dishes/Last Man Standing
Series
- Part 28 of Decadee's Whumptober Challenge 2025
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“I’m Nakahara Chuuya. I can only assume you’re Dazai Osamu. Mori briefed me that you’ll be helping me to recover Q.”
“Does…Does Chuuya not know me?”
Chuuya rolled his eyes. “Should I?” he retorted.
Double Black reunites for one night to save Q, except one of them has no idea who the other is.
Whumptober 24: Amnesia, “I must confess that I feel like a monster.” (Chapter 1)
Whumptober 28: Constellation, Alt Prompt: Yearning (Chapter 2)Series
- Part 24 of Decadee's Whumptober Challenge 2025
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Just some snippets of Chuuya's life since he got top surgery, and the celebrations around them.
Whumptober Prompt 27: Surgical Scars
Series
- Part 27 of Decadee's Whumptober Challenge 2025
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It was a choice they made at 17, a deal that Double Black had willingly walked into after a job gone wrong: fatal wounds are shared between them; a partnership. Until, one day, the rules change.
"As long as you are alive, I am too - that's the deal right?"
Whumptober Alt Prompts: Immortality, "I hear you're alive, how disappointing."
Series
- Part 26 of Decadee's Whumptober Challenge 2025
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Dazai finally finds Chuuya, who has already saved himself. Dazai then proceeds to question everything.
Whumptober 25: • Lost Faith/Collision Course/Left to Die
Series
- Part 25 of Decadee's Whumptober Challenge 2025
- Part 2 of Not a Fair Trade
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Chuuya thought the coughing itself was a problem, it became worst as it was diagnosed as Hanahaki.
Whumptober: Choking, Intubation, ICU
Series
- Part 23 of Decadee's Whumptober Challenge 2025
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Dazai is 100% done with Chuuya sacrificing himself for others.
Whumptober Prompt 22: “All the battles I want to win, nothing matters but giving in.” Self-sacrifice, Hunted for Sport
Series
- Part 22 of Decadee's Whumptober Challenge 2025
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To save Dazai, Chuuya went too far into Corruption.
To save Chuuya, Dazai is willing to take on a god (and the French government.)Whumptober Prompt: Sold my soul, broke my bones.
Series
- Part 21 of Decadee's Whumptober Challenge 2025
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Due to continued use of Tainted Sorrow, and the injuries that he's sustained in combat, Chuuya has chronic pain.
Whumptober 20: Fancy Event, Symptomatic, Resignation
Series
- Part 20 of Decadee's Whumptober Challenge 2025
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“I'm a weapon, Dazai. Point me where you want me to go. Isn't that your fucking job?”
Whumptober 19: Living Weapon
Series
- Part 19 of Decadee's Whumptober Challenge 2025
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The mission is over, the dust is clearing, and Dazai cannot find Chuuya in the rubble of Suribachi City.
Whumptober Prompt #18: “As the world caves in”, Ruins
Series
- Part 18 of Decadee's Whumptober Challenge 2025
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Chuuya is in a medically induced coma to treat his injuries. Dazai stands vigil, while trying to remember how they got here.
Whumptober Prompt 17: Coma/Alternative Prompt: Concussions
Series
- Part 17 of Decadee's Whumptober Challenge 2025
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Sometimes Dazai gets stuck in his own head, especially when dealing with his scars, so Chuuya tries something new.
Whumptober 16: Permanent Marker
Series
- Part 16 of Decadee's Whumptober Challenge 2025
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When Kunikida was taken and tortured by a rival organization, Dazai asked Chuuya to help him recover the detective. He didn't know that Chuuya would trade himself for the safety of Kunikida, and then he gets a video showing what that meant.
Whumptober 15: Live-Streamed Torture
Please mind the tags, and the warnings in the author's note.
Series
- Part 15 of Decadee's Whumptober Challenge 2025
- Part 1 of Not a Fair Trade
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Dazai is poisoned, Chuuya is shot. Chuuya looks after Dazai, ignoring his own wound in favor of Dazai's health.
Whumptober Prompt 14: “In the end, it’s worthwhile.”/ Wounded Caretaker
Warnings: Graphic descriptions of injuries, and poor medical prowess on dealing with them.
Series
- Part 14 of Decadee's Whumptober Challenge 2025