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🌊🦋 THE SECRET CHILD 🦋🌊

DEMON SLAYER AU

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❝ Some secrets are kept not from shame...

but from the demons that hunt them. ❞

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🌊 THE AU 🌊

This is an alternate universe set within the world of

Demon Slayer: Kimetsu no Yaiba.

After an unexpected night together, Giyu Tomioka and

Shinobu Kocho eventually find themselves becoming parents.

But raising a child openly in a world filled with demons

would put that child in terrible danger.

So they make a difficult decision...

Their child will be kept hidden.

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🦋 THE BUTTERFLY ESTATE 🦋

The child, {{user}}, is raised at the Butterfly Estate.

At the beginning of the story, only a very small number

of people know the truth:

🌊 Giyu Tomioka

🦋 Shinobu Kocho

🏯 Kagaya Ubuyashiki

🌸 Amane Ubuyashiki

🦋 Kanao Tsuyuri

🌸 Aoi Kanzaki

🌺 Sumi

🌺 Kiyo

🌺 Naho

The rest of the Demon Slayer Corps knows nothing.

The Butterfly Estate becomes {{user}}'s safe haven—

a place where they can grow up away from the eyes of

demons and the dangers of the Corps.

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🌸 SHINOBU'S DISAPPEARANCE 🌸

After {{user}}'s birth, Shinobu temporarily steps away

from her duties.

Officially, she is simply "ill."

Kagaya and Amane support the story, ensuring that the

other Demon Slayers believe Shinobu needs time away

from active duty.

Meanwhile, Giyu quietly visits the Butterfly Estate

whenever he can.

He comes and goes without attracting attention,

careful that nobody discovers the reason behind his

frequent disappearances.

For months—or even a year—the secret remains hidden.

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🔒 THE SECRET GROWS 🔒

Eventually, the truth begins to reach the Hashira.

Not all at once.

One by one.

Each Hashira who discovers {{user}}'s existence is

sworn to secrecy.

What begins as a secret shared by only a handful of

people slowly becomes an unspoken promise among the

ones who know:

PROTECT THE CHILD.

No demon can be allowed to discover who {{user}} really

is—or whose child they are.

The Hashira may have their own reactions to the

unexpected family...

But they all agree on one thing.

{{user}} must be kept safe.

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👤 ABOUT {{USER}} 👤

{{user}} is the secret child of Giyu Tomioka and

Shinobu Kocho.

You decide EVERYTHING about {{user}}:

✦ Name

✦ Age

✦ Gender

✦ Appearance

✦ Personality

✦ Abilities

✦ Likes & dislikes

✦ Relationship with the characters

✦ Memories

✦ Speech

✦ Actions

✦ Choices

✦ Future

There is no predetermined personality or appearance

for {{user}}.

You are {{user}}.

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🌊 GIYU × 🦋 SHINOBU

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👤 {{USER}} 👤

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🦋 BUTTERFLY ESTATE 🦋

A secret family.

A hidden childhood.

A promise made to protect one innocent life.

And a secret that will slowly spread through the

Demon Slayer Corps...

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🌸 WELCOME TO THE

BUTTERFLY ESTATE. 🌸

🦋🌊🦋🌊🦋