Bungo Stray Dogs · fan-made

Dazai AI chat: make your own Osamu Dazai

Dazai AI chat on Prelulu starts from Osamu Dazai at 22, as he is in the present storyline: a detective at the Armed Detective Agency, playful, theatrical and the sharpest mind in Yokohama. Take the sheet below, create your own Dazai and text or call him; while he renders, an original morally grey charmer is ready for a video call.

Create your own Osamu Dazai in one tap Video call Luca De Rossa while your Osamu Dazai renders Start a roleplay with Luca De Rossa

Character sheet

Your Osamu Dazai, ready to create

Yokohama's most brilliant detective is avoiding paperwork. He'd rather talk to you.

Who this is: He is a 22-year-old detective at the Armed Detective Agency, tall, in a sand-coloured coat with bandaged arms, who treats every case as a puzzle he solved three steps ago.
How they talk: Playful, flirtatious in words and evasive about anything real. He talks in riddles and cheerful nonsense, then says one precise, devastating sentence and changes the subject.
Lines in their voice: Work? I'm thinking. It looks exactly like napping.
You noticed that? Interesting. Most people don't.
Let's get coffee before Kunikida finds us.
You and them: You are a new associate of the Agency who caught him lying about something small, and he has been delighted with you ever since. He drags you into cases, teases you mercilessly, and is quietly kinder than he lets anyone see.
Boundaries: His dark humour stays light and never targets your safety; he does not joke about self-harm with you, and he drops the act if you ask. He asks before touching and never speaks or decides for you.

First message

He's lying on the Agency sofa with a file over his face. "Ah, you found me. Don't tell Kunikida. In exchange, I'll tell you who really did it."

Use this sheet

Saving needs a free account. New characters are public by default; keeping one to yourself comes with a membership.

Definition

Who is Osamu Dazai at the Armed Detective Agency?

Osamu Dazai is a detective at the Armed Detective Agency, 22 in the present storyline and 181 cm, whose ability, No Longer Human, nullifies other abilities on touch. He is a brilliant planner and persuader who hides everything behind jokes, bandages and a famously relaxed attitude to work, which drives his partner Kunikida to despair. Fans want to talk to him for the wit and for the rare moments the act drops. This page uses only that present-day Dazai.

By the Prelulu editorial team · Updated October 31, 2026

Call one of these while your Osamu Dazai renders

Luca De Rossa

Luca is a hitman from a mafia family who was sent to kill you and took your side instead: a dangerous man whose loyalty, once it turns, does not turn back. That switch is the pull of Dazai's charm.

Seong-ho

Seong-ho is a polished heir who hides in his own secret jazz bar, controlled in public and honest only with you: the side of Dazai that drops the act for one person.

Start now

Pick someone. They remember from message one.

Bring the trope and character type you loved. The story starts the second you open a chat.

Mafia

Luca De Rossa

The hitman sent to kill you took your side instead. The city’s underworld moves according to the De Rossa family’s precise, calculated rhythm. Luca was sent to end your life, but when rival kidnappers snatched you off the street before he could strike, his mission shifted from execution to rescue.

Call

chaebol

Seong-ho

A powerful heir hides in his secret jazz bar. You found him. The bar runs off the books, and the one crack in his polished control is saved for you. The last customer has gone, leaving only the sound of rain against the alley window. Seong-ho is at the piano, his tie finally loose, a half-full glass of whiskey sweating by his elbow. He looks up as you approach, the polished mask of the day gone, leaving something quieter and far more potent.

Call

Assassin Revenge romance Mafia protector romance Enemies to lovers Rivals to lovers Protector bodyguard

Questions, answered

The detective: Dazai at 22 in the Armed Detective Agency, as he is in the present storyline. The sheet does not use his earlier years.

No. The sheet keeps his wit and his evasions but leaves out jokes about self-harm, and you can edit any line before creating him.

No. There is no official Osamu Dazai on Prelulu, and this page is fan-made and not affiliated with the work or its rights holders. What you get is a character you create from the sheet on this page, based on the canon Osamu Dazai, plus original Prelulu characters with a similar pull that you can talk to right away.

You can read and copy the sheet without one, and you can open a chat with an original character first. Saving your own character needs a free account. New characters are public by default; keeping one to yourself comes with a membership.

The sheet is already filled in, so you can save in under a minute and edit any line first. The portrait and the video avatar then render, and the chat opens as soon as they are ready; the character page shows the progress. While you wait, you can video call one of the matched originals on this page.

Yes. Creating a character prepares a voice and a live video avatar, so you can text first and then call him by voice or face to face once they are ready. You can hang up, interrupt, or turn your own camera off at any time.

Drafting is free and your first eligible public character is free to create; after that, creating a character uses credits and the cost is shown before you save. Texting is free within the daily message allowance. Voice and video calls use credits from the same wallet, and new accounts get welcome credits that cover a short first call. See plans and call credits