So strange... You there.

What goes on inside your head?

Nothing in particular... What a rude person.

...Or rather, who are you?

You've never heard of Eirin-chan? I'm a human medical doctor.

...You're a talking head aren't you? I've seen things like that in many works of fiction.

But the action of "talking" requires air from the lungs...

Structurally, a head on its own shouldn't be able to talk.

The hypothesis I thought of was that there's a small set of lungs inside your head.

I further thought of what special reason there could be for this... Your opinion?

I feel that your problem is trying to find reason in youkai, but...

I don't know what's going on inside my head.

...What about your heart?

What's it this time...?

For a head to survive and act on its own, it would also need a heart to pump blood to the brain and lungs...

Furthermore, if your body works fine... That would mean you have a set of heart, lungs, and brain for both, or even more?

...So I don't know what's going on with my organs.

If that's what you think, perhaps you're right.

I'm not convinced by that... What about your neck? The questions about you are endless...

It's on the same level of thought as humans with a hobby for wearing costumes...

I'll cut off your head.

Is that so... Would you please let me dissect you? I promise to put your outside back together when I'm done.

No. I wouldn't even let you touch me.

...Such a prideful child. It's not often that I bow my head to someone.

Although I did of course apologize when I encountered Kaguya masturbating in the middle of the day...

...I don't get what you're trying to say, but I don't care about your suspicions.

I don't want to associate with a normal human like you, so would you go away?

...I see... Is it because being prideful would fit with my hypothesis?

What?

For there to be room for the lungs and heart, the brain would have to be smaller.

Not thinking things through, and unable to penetrate your opponent's power... You've experienced that, haven't you?

Essentially, you're what we'd call an idiot.

But if you think about it, it's quite sad.

Is it hard to live being so powerless, yet so prideful?

How about you be good and cooperate with me...

...Hmph, it's because you kept acting high and mighty...

...That waznt vry nice...

Nn... Umph...!

...Of course, itz hard at ferst... To talk properly.

Wha...! You were a Rokurokubi too!?

No... As I said, I'm a human.

Ah... I can stabilize this... I understand the theory behind it.

While I was talking, I tried using my spirit to push my lungs into my head.

I was wondering if I could do it as well... This saved me a lot of trouble for the experiment... Thank you.

Thanking me for decapitating you... What goes on inside your head?

Is covering your mouth really a clumsy way of hiding it?