"Ahh Satisfied............" Sendo said, sitting on the edge of the bed.

"I can still eat a little~" Yuri looked a little unsatisfied.

"Yuri is really greedy. But it's no wonder that I never knew that taro could be eaten in addition to being cooked, and it was so delicious! Ishii said with a glass of boiling water in his hand.

"Where, it's just a homely practice!"

"It's an unimaginable feast for us!" Chiho replied.

"Hmmm! If only I could eat it every day! Yuri nodded wildly.

"I'm afraid I won't be able to eat it every day. After all, although we still have plenty of food, we don't know how far the way to the top is to get to the top, so let's save a little! Qianhu said.

"Yes! That's all it can be. Yuri said with some frustration.

"Does Ishii live here?" The boy asked, looking around.

"Well, sort of."

"Na! During the day, I heard you say something about the record, so can I continue to talk about it. Qianhu asked curiously.

"Ahh That's what you're sticking to right now! ”

"In front of us?" Qianhu asked suspiciously.

"Are these blueprints?" The boy asked.

"That's right! These are the blueprints of the planes, and I've collected all the blueprints I can find at this base, ranging from the oldest models made by humans to the technology we don't understand at all. Ishii introduced them one by one.

"That is to say............"

"That's right! The base is also responsible for the custody of these technical records. Ishii said excitedly.

"This is the history of flight technology!" The boy said with emotion.

"I consulted all kinds of drawings and designed the plane." Ishii continued.

"Is that really Ishii's original?" The boy said.

"I always feel a little worried............ "Qianhu wanted to speak and stopped.

"It feels like it's going to fall." Yuri said it directly.

"Why don't you build it according to the existing blueprints?" The boy asked suspiciously.

"Because the parts that can be used have to be put together, there is no way! ………… And there's not much time left! ”

"Is it because of the necessities?" The boy asked.

"Although there is also food storage, but it is mainly due to the climate, if I miss this warm season without wind and snow, I am afraid I will not have a second chance to take off!" Ishii's tone was a little heavy.

"But if it fails, then there will be only ............ death," Chinohe said with sadness in his tone.

"Chi-chan, why are you scared!"

"But nowhere to go is the most desperate thing, isn't it? I can only die with this city. Ishii's words put a break on this topic.

“………… Let's sleep today, the warehouse next door is empty, so Chiho and Yuri will sleep there! If it's a floating wave, I'll take you to the room where you sleep first, and you can wash and sleep while the water in the bathtub is still warm. ”

"I'm sorry for you!"

"It's okay! Come with me. As he spoke, Ishii led the boy to another dormitory.

"Did you and Chinohe travel together from the beginning?" Ishii asked suddenly.

"No, we actually encountered it in an abandoned facility on the lower level! It was probably just the two of them before! The boy explained.

"I see...... But it looks like they trust you. ”

"Haha! Is it? After all, we've been traveling together for a long time, and a lot of things have happened along the way! The boy smiled and scratched his head.

"Well! I can see that they already trust you as if you were family! This is still rare, after all, that child of Qianhu always looks very rational! ”

"Actually, Yuri is the one who is most vigilant." The boy corrected.

"Really?" Ishii was a little surprised.

"Although I don't deny that compared to Qianhu, Yuli is a little arrogant and informal, but don't look at her like that, when it comes to major matters that need to be decided, she has a decisiveness that Qianhu does not have."

"Listening to you, these two children complement each other a little in personality!" Ishii said with a smile.

"That's right! I think it's because of each other that they can keep going! ”

"Haha~ You're a child yourself! Has anyone ever said that you are a little too mature? Ishii said with some amusement.

"I'm sorry! It's hard to meet people! ”

“………… Yes! There are fewer and fewer people in this city! …… All right! We're here. Ishii said as he stood in the doorway of a room.

"Is this it?"

"Although the bed is relatively narrow, the equipment in the room is relatively complete, you can rest here!"

"That's right! Ishii I would like to ask. The boy called out to Ishii, who was going back to his room.

"What?"

"Is there a power supply facility here?" The boy asked embarrassedly.

"I want to think about it............ It seems that there is such a place because the current is relatively strong, so I haven't paid attention to it, so I'll take you to see it tomorrow! Ishii said after thinking for a moment.

"So in order not to affect your work, please take me to see it after the work is over!"

"That's fine."

"Thank you so much!"

"It's okay! Rest well! Ishii finished speaking to the boy and walked towards his room............

"So...... I'll go wash and sleep too! The boy muttered to himself and took a change of clothes and walked towards the bathroom............

～～～～～～～～～～～～～～～

Chiho and Yuri slept in the room, the lights had gone out, but the girls in the room had not fallen asleep.

"Na! Chi-chan, what does it look like outside the city? Yuri was the first to break the silence.

"Sa! Outside the city or something, I haven't even thought about this problem! After all, I haven't even figured out the city itself! Chihu thought about it and went back.

"Will Ishii know?"

"Who knows? But...... If you continue to stay here, you can only wait for death slowly, or something, it should be true. ”

"It's a blessing to meet Ishii!" Yuri said.

"Met on a journey...... Separately...... And then meet again, the process itself is probably to be able to carve others into your own life, and also to carve yourself into other people's lives! Qianhu said seriously.

"I wonder what happened to Kanazawa? Are you still drawing maps? ”

"Sa............ If all goes well......... Definitely. ”

With the words of Qianhu, the two girls fell asleep one after another............

The next day, the boys and girls, led by Ishii, began to cover the surface of the wings, and the work progressed quickly under the tow of a powerful half-track.........

"In that case, it will probably be completed the day after tomorrow! After that, just double-check and you'll be able to take off! Ishii said as he drank the porridge soup that the boy had seasoned with taro and rice and dried meat powder.

"Really? I can finally watch the plane take off. Yuri said excitedly as she drank her porridge.

"I'm sorry that I can only sit alone!" Ishii apologized again.

"It's a little disappointing, but it's okay, it's nice to be able to see it take off with your own eyes, isn't it?"

"Yuri can occasionally say something that makes sense!" The boy said.

"Really? Hey............" Yuri scratched her cheek.

"But isn't it a bit risky just to rely on the data of that prototype machine?" Qianhu said worriedly.

"I always feel like the wings are easy to break." Yuri bluntly voiced her concern about the long, thin wings of the plane.

"That's right! This is what I want to say, I think tomorrow it would be better for us to carefully strengthen the wings of the aircraft, and it is necessary to sacrifice the range for safety. "The teenager suggested.

“………… Hawkers! I'll think about it! Ishii thought about it carefully and agreed.

"That's for the best!" Only then did the crowd relax.

"That's right, Floating Waves...... I'll accompany you to the military power supply facilities that I told you before! Ishii said after drinking the porridge soup in his hand.

"Oh! I'm sorry for you. The boy drank the rest of the porridge in one gulp and followed Ishii out of the room.

"Fukiba-chan, do you want us to help?" Yuri asked.

"It's okay! Just to recharge this guy's batteries! The boy took off his gloves and revealed the bracelet on his wrist.

"Oh!" The girls nodded knowingly.

"Eat slowly! I'll go with Ishii first! With that, the boy followed Ishii's pace.

The two walked for about half an hour to the other corner of the military base............

"It's here! This is ......," Ishii said, pointing to a room with a lot of monitors.

"Here it is............ Communication room? The boy guessed after a rough look at the layout of the room.

"I guess so............ Some of the equipment has been abandoned here because it is no longer operational, but the energy supply has not weakened, and it is probably not an energy system like the other facilities in the base! It's just that the current is too large to use, so it's been abandoned here! Ishii explained.

"Then I'll try!" The boy connected the energy excuse he found to the bracelet, only to see that the energy value of the bracelet was rising at a rate of 0.04 percent per minute.

"How? Does it work? Ishii asked.

"What a help! The energy here is very suitable! The boy said gratefully.

"That's good! Then again, what the hell is this? Ishii asked, pointing to the high-tech bracelet.

"Well! Although it has not been actually used, the only thing that can be seen from the chest where it is stored is that it is a manufacturing tool. ”

"Huh~~ This should be a technology from a much older era, right?" Ishii said.

"Can you see that?"

"As I said, there are some technologies in the blueprints of this base that I can't understand...... Those drawings are very similar to this style. ”

"Well! It's probably a product of the same era! Who knows? The boy said indifferently.

"That's right! After all, there are a lot of things that have been buried with the war! What's the use of exploring this in this age when there are few human beings left? ………… Then you get busy first! I'm going to do some design for tomorrow's wing reinforcement. ”

"Oh! This is a very important matter, you go ahead and get busy! The boy said hurriedly.

"Then I'll go first......" Ishii said and left the communication room.

"Judging by this speed, it should be in time............" the boy muttered to himself as he looked at the slowly increasing energy numbers............