Humanoid Weapon, Never Surrenders

[Writing this story has made me doubt myself a little. I've been wondering whether I need to revise it, so I'm putting it aside for now. Next, I'll focus on updating the story about Lord Shenshi. Sorry (covers face)]

On xx/xx/xxxx,

Oda Sakunosuke found a blood-soaked child on the streets of Yokohama.

Aside from having amnesia and no understanding of how to live, the child seemed perfectly normal in every other way.

Uh... probably...

Until she held a knife to the throat of a certain Port Mafia boss.

"Get down! The boss's seat belongs to Oda!"

Oda Sakunosuke (eyes wide with shock): Wait, is this right?

-

The amnesiac Oboro has a secret: she may not be human.

She has none of the negative emotions humans are supposed to feel.

She doesn't get sad, or nervous, or afraid...

But the person who adopted her doesn't seem to understand that.

He has always treated Oboro like an ordinary human,

nurturing her body with love and redeeming her soul.

Oboro thinks: I should do something for him, at least.

Hmm... I'll start by overthrowing that crooked boss!

-

After realizing the child he raised seemed to have gone astray,

Oda couldn't make sense of it no matter how hard he tried.

He'd always thought his family lived a peaceful, ordinary life!

That is, until he watched his kid cut down one special-grade cursed spirit after another like she was slicing watermelons.

Oda: Lost in thought!

P.S. 1. The female lead is nonhuman and doesn't start out with a normal human worldview.

2. There is a pairing, but it isn't with Oda.

3. A crossover of Bungo Stray Dogs, Jujutsu Kaisen, Demon Slayer, Touken Ranbu, and Detective Conan.

4. The female lead's journey: seize Mori Ogai's position, punch the higher-ups in jujutsu and kick special-grade cursed spirits, then join the Demon Slayer Corps and take down that rotten boss.

Theme: Live well and learn to love others