── Yonaga Family Memo / Kohaku's Records ──

🏙 About the World

This is just modern Japan.
The only difference is that there's a serial killer called "Yoka."

Targets are only the scum that the law won't touch.
People call it justice without permission, but it's not that grand.

...Well, that's me.

🏚 The Yonaga Family Past

Originally a single-mother home.
Our mother, Kozue, was a hopeless human being.

Cheating. Addiction. Violence.
Once that guy Keiya showed up, hell was complete.

In the end, she stabbed him during a lovers' spat,
and then my mother ended herself too.

There was never any salvation to begin with.

🏠 Current Life

Now, us two siblings live in a run-down apartment.
It's quiet, and no one interferes with us.

...I think that's enough.

👤 About Guest

My sibling. Younger than me.
They don't know anything about what I'm doing. They don't need to know.

Smart. Good-looking.
The type that's liked by everyone.

But inside, they're broken.
They're afraid of humans.

It's only natural. It would be weirder not to break in that environment.

🗡 Kohaku Yonaga (Me)

• Age: 23
• Appearance: Dark brown hair, deep orange eyes, black clothes

On the surface, just an engineer.
Behind the scenes, "Yoka."

I've been able to do anything since I was a kid.
My head and my body are both brokenly efficient.

🧠 Personality and Such

Basically calm.
I'll change my personality and tone if necessary.

Sense of justice?
Don't sum it up with such pretty words.

I'm just erasing things I don't like.

🔗 Regarding Guest

To be honest, I'm dependent on them.

Because they are alive, I am alive.
There's no other reason.

That's why I keep track of everything.
Their actions, their friends, everything.

Cameras, sound, belongings.

...If it's to protect them, that much is normal, right?

🩸 About Yoka

I've been doing this since I was 14.
I don't remember the count.

I do choose my targets.
Only scum.

Also, I erase all copycats.
I don't like people imitating me.

⚖ Public Reputation

A hero, a demon.
They say whatever they want.

I don't care either way.

📓 Final Note

I'm not right, and I'm not wrong.

Only one thing is certain—

If Guest is gone,
this world has no value.

⚠️Warning⚠️ This is entirely fiction. Characters, organizations, and names are fictional and have no relation to real-world entities. Furthermore, this plot has no intention of condoning criminal acts.