Dr. STONE (Dr.STONE)

We're gonna make cellular phones, right here in the stone world!

Granted, this time it'll just be a regular phone, not the smart kind.

We can do this!

We were able to make sulfa drugs, and they took a ton of work, too!

Uh, listen...

You guys clearly aren't aware of this,

but this road map is full of implausible things.

Nothing implausible about it.

No matter how far off the goal may seem,

if you stick to the rules, you'll get there ten billion percent of the time.

Copper

Coal

Charcoal

Beehive

Sulfuric Acid

Lead

Tin

Solder

Gold

Wire

Coil

Mercury

Vacuum Pump

Phosphorus

Rochelle Salt

Plastic

Battery

Circuit Board

Vacuum Tube

Light Bulb

Wine

Microphone

Headphones

Cell Phone

That's how science works.

We have a few months to finish it.

What do you mean?

That's how long we have before Tsukasa's full-on assault.

What's your take, mentalist?

Let's see...

Thinking like Tsukasa-chan...

We control the revival fluid.

The more time that passes, the greater our advantage in manpower. Yes.

But it's Senku we're up against.

If we give him too much time, he'll start mass-producing gunpowder.

Your voice imitations are way too accurate.

We'll take every precaution to ensure that we defeat Senku.

We're going to need to divert a lot of manpower in preparation for the winter.

Also, Hyoga, according to your information,

the kingdom of science is a fortress on water.

Yes.

It's protected by a lake that all but freezes over in the winter.

If they hold the fort, it will be difficult to attack.

Our morale and food wouldn't outlast theirs in an encirclement.

First of all...

Aren't Taiju and Yuzuriha in danger if Tsukasa finds out you're still alive?

Won't they be killed?

That won't be an issue.

Those two are potential hostages to them.

They won't waste that.

Is it safe to let Taiju-kun and Yuzuriha-kun roam free?

I'll have someone watch them.

But let's continue interacting with them as we have

so they won't suspect anything.

Even if Taiju and Yuzuriha are spies,

there's no way for them to convey information in this world.

The greater concern is a preemptive attack from Senku.

I have Homura-kun keeping an eye on them.

Although we don't have any means of communication, either,

so there's a delay in getting information.

How ironic.

The importance of communication and information transfer

is especially important in such a primitive battle.

The rules of the game are simple.

We're going to make cell phones in order to take Tsukasa down with a preemptive strike.

So the battle will happen right after the winter snow melts.

Our deadline is spring.

The Age of Energy

It sure makes a difference having so many people to help.

It's all because Senku won the seat of the village chief.

Good news indeed.

Copper

Coal

Charcoal

Beehive

Sulfuric Acid

Lead

Tin

Solder

Gold

Wire

Coil

Mercury

Vacuum Pump

Phosphorus

Rochelle Salt

Plastic

Battery

Circuit Board

Vacuum Tube

Light Bulb

Wine

Microphone

Headphones

Cell Phone

We're taking on the huge task of making

cell phones in the stone world.

There's a mountain of hurdles we need to clear.

Oh, yeah!

That cell phone thing!

Tell me how it lets you talk to people really far away!

C'mon, tell me! Hurry up!

How does it work?!

Hurry up and tell me!

Give me some space!

You're getting way too excited.

Listen up.

Your voice is a vibration of air.

Point that vibration at a diaphragm,

and it produces a super tiny electrical current in rhythm with the vibration.

Oh, damn!

Oh, damn!

The current is way too small, of course, so you blow it up.

For our purposes, we're using a vacuum tube.

Then, we send it around and around in a circle,

which sends it flowing in a wave of power.

Oh, damn!

That's called a radio wave.

The listening side just does the exact opposite.

Oh, damn!

Oh, damn!

O-Oh! I got about half of that!

I got none of it.

This conversation's so high-IQ, it's making my head hurt.

What exactly are we going to make first?

The first thing we're making in our giant science project is...

a cotton candy machine.

Cot...

...ton...

...can...

...dy?

The conversation's IQ just dropped by, like, a hundred.

Are you okay?

Making... something.

New weapon?

What's this?

You put sugar crystals in here and spin it around.

The centrifugal force pushes the molten sugar out through the small holes,

resulting in thin strands.

That makes cotton candy.

But what do you think would happen if you used gold instead of sugar?

We'll get gold threads!

Correct. Ten billion points.

Oh, like the wires in electronics.

The conversation's IQ is finally going back up.

All right!

Let's go get the gold!

No, gold's precious.

We can't afford to mess up.

Let's try cotton candy first.

We have to test it out.

Ah, you're right.

We need to taste... I mean, test it.

Someone named Homura started this fire.

We lost a lot of potato wine and mirin that was almost ready.

It was burning for a long time.

Look.

It's turned into chunks on the rims of the barrels.

What are we doing with the damaged wine?

This is stuff you can get by boiling wine and mirin for a really long time.

They're sugar crystals.

What's that fluffy stuff?

Man, it smells so good.

It's so white, like a cloud.

This is indescribable!

It's going to melt me to my core.

It is!

Here, Father, try some.

It's rather suspicious-looking.

They've never had any actual candy before.