Dancing Circles on the Horizon of Events

And a little before noon.

In the flat meadows outside the city walls, which were built to surround the king's capital, there was the figure of a flying boat shining black with the colour of the material itself, created solely by the hands of Lucia and Silanui and the craftsmen of Mid-Eden.

The shape of such a airship seemed to be unique because it was not equipped with a demonic guided gravitational control engine, like that of its neighbor Endercia.

Within the elongated movement, in the area slightly before half, with wings longer than the entire length, the rear side is provided with horizontal and vertical tails….

In short, it was shaped like a passenger aircraft in the modern world.

In fact, the flying mechanism is indisputably an aircraft, as it is built using aeronautical engineering in the modern world and fluid dynamics to it.

However, a huge difference from aircraft in the modern world was the presence of a giant engine mounted on the neck.

That's not because the propulsion agency by propeller was already a form of antiques handling…

In the case of large machines, which generally exceed 30 m in length, their power is mostly mounted under the wing, hating air resistance, or at the top slightly away from the fuselage.

But the domestic airships created by the people of Mid-Eden, like small light planes, had engines mounted on the front of the motion and propellers installed in the form of direct connections there.

To that, the circumstances specific to Mid-Eden, which had not yet advanced in technology, were deeply relevant.

In the modern world, there is a mechanism called "fly-by-wire", which transmits a command from a pilot by means of an electrical signal or an optical signal, so remote control or coordinated control of two or more engines is easily feasible via a computer or the like.

But Mid-Eden's technology alone, instead of computers, could not even handle electrical and light signals, and even if it could be handled by analogy, there was no way to turn it into the control of magic, the engine's fuel, so inevitably the engine could only be equipped with one.

And sometimes the place to mount it had to be in a position where magical manipulation was possible, right near the cockpit where there was a pilot capable of manipulating magic.

Thus, as mentioned earlier, there was not much choice in the modern world to install an engine with a single large output on its neck, knowing the drop in thrust caused by the large air resistance, which would result from the propeller accepting the air blown behind it.

... Well, I can't say that part of the control has been neglected because of too much restraint in vain about the engine's internal mechanism...

"It's time ~? Concubine ~. Start the engine"

Cortex, sitting in the co-pilot's seat that had been installed inside the cockpit, told Teresa that as he finished checking the various equipment and waved small against the people of Wang Du who could see outside the window.

"... um. Okay, itchy."

Theresa in the main cockpit, listening to words hung from homunculus who looks just like herself and returning a reply in earnest.

Then she slowly began to turn it to store the rotational energy on the heavy flywheels in the engine that would be present at the end of that crank if she slowly hung her hands on the crank that was growing from the gaps in the equipment installed in large quantities in front of her.

"... don't you leave the clutch connection to Cole?

"Is it good ~? This is your first test flight ~?

"... too nervous, wrong, I think I'm going to manipulate another lever. Instead, the concubine pulls the joystick?

"Okay ~"

And inside the engine, Fovon, when something started to sound like it was going around at high speed.

"I'm going ~?

When Cortex heard that sound, it was the flywheel that served to save the explosive energy of the reciprocal engine as rotating energy… i.e. the metal discs inside the engine turned by Theresa and the cranks connected to 18 pistons that were ahead of it and are now nowhere to be connected… finally connected.

At that moment,

Dodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoodoo

Engine that starts to make a continuous explosion sound.

At first, that explosion, which was echoing in a relatively slow cycle, also, a few seconds later,

Boo-wow!!

Recently, it has changed to a loud tone, which is making noise inside the Wang capital.

"The ignition is complete!

"That's the engine the concubines built ~?

"Since you don't have a turbo, aren't you as weak as a concubine?

and Teresa who makes such a joke while checking various instrumentation related to the engine.

Then she turned to the view outside from the cockpit to make sure no one was on the path...... and

"... okay? Cole."

I spoke of the last confirmation.

"Yes. Is Concubine the Good ~? Are you ready ~? Did you go to the bathroom ~? Have you eaten what you like properly ~?

"... no, it's not because I'm dying?

"Yes. Of course I know ~? I'll be fine at any time!

"Uh-huh. Then go!... I'm going to do it!

Theresa then knocked down the Magic Throttle lever and the lever for adjusting the angle of the propeller that was attached to the engine to the deepest part at the same time.

Then the engine tone changes, as does the sound of the wind flowing outside the canopy.

And most importantly...

…… Oh, it's working!

It was small, but the seat where Teresa and the others sat began to push them backwards and forwards.

"Well... if you don't move, you're a big shame ~. But the problem is coming up ~?

"Ugh, um!

The slidable distance of the airship slipping on the ground by means of 'soli' rather than rubber tyres, due to its laboratory size, was 5 km.

More than that, there are hills, forests, rocks, etc. that cannot be gliding, so this time during the last 5 km, the goal was to do a flight experiment.

For this reason, going up altitude and across forests and mountains… is still a long way off.

Nevertheless, that, too, is only a matter of time if we succeed in the first flight.

Gogogogogogogogo!!

"Meh, the mess rocks, huh?!

"Well, you're not running down a flat road."

"Nooooooooo?! Are you worried it won't break?!

"I'm more worried about my concubine being too excited to break ~..."

Cortex laughs bitterly when the glide finally begins and Teresa, who has become an unusual tension, feels like she's going to travel straight into that different world.

But it's also a flash.

"... then, concubine ~? Gently pull the joystick. Is it good ~? Softly ~?

With a serious look on his face, Cortex hung those words on Teresa as he gestured to pull the joystick.

She seemed a little worried that she was hearing herself well because of the explosion the engine played...

"Go...! Yes, all I've ever done is look up... to the other side of that blue sky...!

The words seemed to arrive firmly, and Theresa slowly began to pull the joystick forward.

Then...

"... what? I feel like it's suddenly quiet..."

The vibrations that were echoing from the solids that were rubbing the ground accidentally disappeared.

"Good for you ~? concubine. We're flying now ~?

"... Huh?

"Oh, yeah, yeah. Quick, put the joystick back. If you stay like this, you're going into the woods ~"

"Ugh, um. You got it!

Theresa slowly returns the joystick as a result of being pointed out to Cortex.

At that time, did you firmly put the engine throttle back in front of you because you have repeatedly practiced the advance so far?

Then, shortly.

Dogogogogogogo!!

A vibration that pushes through the body again comes from the lower part of the fuselage.

That is... we were able to land safely.

Feel that vibration,

"Yay, you did it!!" rattling

"Good for you ~? Concubine ~"

The cockpit of a flying boat that was going to stop somehow within the planned 5km, and although it had not stopped yet, the two share the joy.

Mid-Eden changed dramatically at this moment......

Both Theresa and Cortex had such a hunch.

... that was the time.

Dgowwwwww!!

Unexpectedly, an explosion different from the engine's operating sound was heard from the front of the hull.

…… Wow, concubine! Hurry up and get out of here!

From the other side of the canopy, Cortex screams, seeing the black smoke rising and the blue and white light characteristic of magic.

While concurrently in the chairmanship, finding time and conducting research on magic, she immediately seemed to know what had happened inside the engine.

Magic runoff......

In short, fuel in the name of magic, which produces enough output to accelerate a huge fuselage that extends to a few tons in a short time to nearly 200 kilometres per hour, exploded not inside the engine that was supposed to explode, but outside it.

... No, it's about to explode, should I say?

When I pondered what physics called the energy preservation rule, if the energy hidden in the jet fuel mounted on passenger aircraft in the modern world and the energy of the magic charged to the magic tank of this airship were the same, the explosion of the magic leak would simply have ended up raising black smoke and flames... there was no reason for that.

Dgowwwwww!!

And while Teresa and Cortex are on board, the exploding Mid-Eden's first domestic passenger plane.

At this moment, the survival of the last royalty left in Mid-Eden was to travel from this world….