The hero magician wants to relax. He was too active and targeted for his life, so we'll start over.

The Demon Stone rocket engine test went well. No problems were found in terms of durability, thanks to the misrill construction, no cracks in or broken.

The rest is about thrust and the magic you consume.

Massifying the explosion used for thrust will consume more magic. If you run out of onboard magic, you won't be able to produce that thrust either.

This is the same in the world I was in. Cruise speeds are fuel efficient, but if you can fly at full speed, you'll consume fuel faster and you won't be able to fly long.

Improvements will be made to improve fuel efficiency, but even airplanes that can only fly for about five or six minutes can be tested manoeuvres in the air.

So we actually build an airplane with the engine on it, and we test it with it. As with helicopters, it's a drone experiment at first.... Poor Shapeshifter, you put the test pilot - and I've changed the way a little here.

Because shapeshifters manipulate the fuselage the same way, but if you use drones, you don't need to make a cockpit of anything.

In other words, the big shapeshifter asks you to transform into a plane shape and fly with a rocket engine in the rear.

I'm a development associate - that is, Yuna and Safilo of Dungeon Core, the Sfera who provides shapeshifters.

At first glance, it is a very ridiculous proposal. I can't believe I let the black slime turn into a fighter and put the engine on and fly.

but with shapeshifters themselves controlling the fuselage in the air, they can directly reflect the rudder, fuselage reaction, and wing shape. If the shapeshifter were to change the shape of the fuselage, it would also have the advantage of saving time producing a body for experimentation. Saving parts, saving production time - i.e., faster experience gathering and accumulation of aircraft development know-how (chisel) in a short period of time could be expected.

Note that changes in shape and the like are also recorded by placing a copy core provided by Safilo together. Leaving not only optimal data, but also futile flight data, will also be useful for subsequent research.

The shape of the aircraft will be modified while I draw some proper drawings and fly them back.... What, Shapeshifter, you are physically resistant to a point where you will not die to the extent that you crashed.

The first flight flew a Shapeshifter plane to lower the rocket's thrust. Flew well even at low output due to very light body weight. Fly straight over Willidis and swirl slowly. I repeated that and came down to the parking lot in about three minutes.

Turn off the engine and skip like a glider. It felt more like a bird landing than a landing, and the shape was clearly different from that of the plane then... well, I didn't make a proper runway or anything in the first place, and it's my first flight, so let's close our eyes there.

After I get off the ground, I ask you, Shapeshifter Plane, what do you think of the flight?... It's a sight too fantastic to talk to a plane or something, but I can't help it.

Note that the view from the plane's neck was recorded by Copycore, so we could also see footage of what it would look like if it actually flew.... mostly in the sky, to the extent that sometimes the surface shows a little.

Flight experiments were repeated many times while backing up test records. Optimization seems to work out better with Sfera and Safilo, so I went back to developing the engine.

The rocket engine is the first stage. The production is in the jet propulsion engine.

Rockets only consume internal fuel, but the jet propulsion engines we develop in this world capture the air and magic in the atmosphere and use it for combustion. In other words, it incorporates magic not only from inside the magic tank, but from outside as well.

This reduces the consumption of combustion magic and without lowering the power of combustion itself. Efficiency in the use of magic. The distance travelled - you can call it flight time - is a calculation that will make it possible to extend it considerably.

In that sense, it's not like a strict jet engine.

On weekdays, go to Actis Knights School and study with Early.

But I didn't seriously want to take the study, so I spent some time doing the engine thing on my notebook for classroom content recording, drawing diagrams of official helicopters, etc.

As always, me and Early's seats are at the back of the classroom and at the top, so it's about Early to be able to see about what I'm drawing.

But during the lecture, I guess I seem keen to take notes to the teachers who don't move from the table position.

So, if you want me to show my face on campus...

"What do you say, Jin? What makes you officially a teacher next year?

It's the end of the story.

"Now would you mind doing a magic course for the instructor?

"... uh, I'll think about it"

It's me who's already in the Adventurer's Guild and doing the faculty imitation in the Adventurer's Magic Course. Is it the Japanese sex that is common and difficult to say no?

I'm the one who's sticking one foot in a hero in this country. When I was in the Union, I wouldn't mind when I was on the front line because I was in the middle of a war, but once I stepped back, I was exposed to a lot of every request and request for this hand.... That's why I'm not a hero.

"By the way, Jin, I was wondering one thing."

Instructor Lasson sees Early. There was a former prince who was totally in a female knight uniform on the board.

"I wonder what Master Early is doing?

"Photography. With a new magic tool."

The shooting girl was still alive here. Though they were adults a few days after school began, they now shoot around with various views of the school and the behavior of the students during their breaks.... Well, there will be less to take later. Just the first one, this kind of thing.

The lecture ends at noon and free time in the afternoon. I just dropped out of school so as to avoid students who would like to receive warm advice, who don't have a club solicitation but want me to visit them.

This is the day to show your face to the Adventurer Guild, so go from the Blue Lion Dorm to the Guild via the portal.... Note that the shooting girl followed with a camera that switched to a new copy core in an attempt to shoot inside the Adventurer Guild.... about our daughter-in-law being zocky on camera.

Mr. Vaud, the guild chief, welcomed me in the office.

"Long time no see, Jin. How have you been?

"Yeah well.... I was here a week ago"

"It's definitely been a long time. You can come here every day."

"That's how you feel about pushing me to work. I'm not getting in that hand."

He says he's busy making a home and he's running away, but I'm an S-rank adventurer in Wangdu. If there is any serious trouble, I am in a position to call you immediately.

"Invite me when you have a home."

Says Vaud, a big senior in S-rank adventurer. I've handed you a few sheets of paper, so read that.

"Next time, I'll bring you a nice cup of coffee."

"A coffee?"

"... uh, don't you know?

I should have made it tea, but I had a chat with Mr. Vaud about exchanging information. Confirmed the date of the next Alliance sponsored magic course for adventurers, this day he left.

He also spoke to his deputy guild chief, Lassia, but Dark Elf's deputy guild chief asked me about Early, who was filming in the guild.

Explaining this one, she has been interested in cameras and has been consulting to see if she can get one.

As with the air boots, I may have even felt the smell of new gold. Nothing. I don't think Mr. Lassia is mean to money, even a money-keeper, but I just don't think he misses talking about this hand before he gets involved in guild management as a deputy guild manager.

Well, the camera itself, I just put the right case on the copy core, so it's not hard to prepare. I'm just going to need some magic paper or something besides to display what I took or leave it as a photo......