How silly, Cirno. Obviously, Yuyuko just immediately coverts her food into energy by respiration, and expels all the byproducts.

I guess only a ⑨ would think of some overly complicated explanation like this.

This is a case of the misconception that energy and mass convert into each other.
Actually pure energy has a mass by itself, and the famous equation m=E/c^2 states the mass of that energy.
Mass is conserved and does not disappear

Lazy answer: it's magic.

unicode said:
This is a case of the misconception that energy and mass convert into each other.
Actually pure energy has a mass by itself, and the famous equation m=E/c^2 states the mass of that energy.
Mass is conserved and does not disappear

What about matter-antimatter annihilation? Say, an electron-positron annihilation, where the two particles are certainly destroyed, resulting in the creation of a pair of massless photons.

Conservation of mass only holds in isolated, closed systems. A whole universe can by no means be considered a system that can be observed in its entirety, meaning that a local violation of said law is possible without a global violation occurring.
And anyway, General Relativity doesn't even define "mass" strictly. I'm sorta fuzzy on the exact terms used, but there's an invariant mass, and I think there's an inertial mass too.
Is there a physicist on call here...?

Need a clean up on isle 3. A person had just his mind blown from the math above me.

Anyway, that's enough to blast Earth to kingdom come.

In other words, every single flesh/food/whatever-eating ghost is a walking, more or less, 55000 times Hiroshima bomb.

If this is true, then you'll think that every year during the Chinese 'Hungry Ghost Festival' / 盂蘭盆 our world is worse than just doomed, ain't it?

If we break down further, we can safely assume that one hungry ghost produce antimatter with mass of its victim. And a tiny lightweight little droplet of antimatter can destroy a small house made of stone and brick.

Should we panic now?

Mr.Obake said:
In other words, every single flesh/food/whatever-eating ghost is a walking, more or less, 55000 times Hiroshima bomb.

If this is true, then you'll think that every year during the Chinese 'Hungry Ghost Festival' / 盂蘭盆 our world is worse than just doomed, ain't it?

If we break down further, we can safely assume that one hungry ghost produce antimatter with mass of its victim. And a tiny lightweight little droplet of antimatter can destroy a small house made of stone and brick.

Should we panic now?

No. For we are riding on something that potentially equals 7,925x10^21 Little Boys. That's a lot of power. And said collection of nukes orbits a self-regulating fusion warhead many thousand times more massive than itself, that regularly throws out plasma blasts capable of potentially stripping the atmosphere from planets and incinerating their surfaces. All the while generating a shield to protect itself from things that could be regarded as the big brothers of the Death Star hopped up on HGH and steroids, cubed, then raised to the tenth power (Gamma Ray Bursts). The universe is a frickin' scary place, when you think about it...

As for antimatter, its production would be unfeasible in any significant quantity. If you're going down the magic route, you might as well say that magic allows the local violation of the Conservation of Mass, and it would hold just as much validity.

ThunderBird said:
No. For we are riding on something that potentially equals 7,925x10^21 Little Boys. That's a lot of power. And said collection of nukes orbits a self-regulating fusion warhead many thousand times more massive than itself, that regularly throws out plasma blasts capable of potentially stripping the atmosphere from planets and incinerating their surfaces. All the while generating a shield to protect itself from things that could be regarded as the big brothers of the Death Star hopped up on HGH and steroids, cubed, then raised to the tenth power (Gamma Ray Bursts). The universe is a frickin' scary place, when you think about it...

As for antimatter, its production would be unfeasible in any significant quantity. If you're going down the magic route, you might as well say that magic allows the local violation of the Conservation of Mass, and it would hold just as much validity.

Lol, ghost is the real and potential source of true energy for futuristic technology of nuclear warhead. Thanks to the theory of Magic, or sufficiently-high-advanced-technology-indistinguishable-from-magic.

Quoting Frank Woods: "This is Genso' baby!"

Mr.Obake said:
Lol, ghost is the real and potential source of true energy for futuristic technology of nuclear warhead. Thanks to the theory of Magic, or sufficiently-high-advanced-technology-indistinguishable-from-magic.

Quoting Frank Woods: "This is Genso' baby!"

And to reply to your quote: "YOU CAN'T KILL ME!"

Oh, if Ghosts have Zero Mass then when they undergo into light speed they will have infinite mass, right?

Honestly, I think it's all expelled through Danmaku.