Fort City first block. A white stately mansion located in the dwelling district of the wealthy.

Two persons were sitting on a sofa in a spacious living room.

One of them was a man characterized by his blond hair and high stature, Barzeride Kreutzer.

The other was an existence with sharp piercing eyes which put on a jet black robe and a hood which covered over his eyes.

Inside, the house was illuminated by the sunlight flowing in through the windows and there was no presence of other people such as servants.

“So –– how is it? The condition of the Divine Drag-Ride <A?i Dahāka> that I sold––”

“Yeah. It’s splendid, my friend. I was finally able to perfectly master its Divine Raiment. I still content myself with third place in the tournament of the Capital for now, but––. If I feel like it, this country’s Drag-Knights will no longer be opponents for me.”

To the existence with the robe, the blond man full of confidence answered while returning a smile.

“I see; it’s as expected of you, my sworn friend. Then–– I count on you for the matter we have talked about.”

Barzeride smiled at the familiar voice.

“If I remember correctly, it was about me marrying that young woman of Earl of Ymir, right? The fact that she is a foreign woman will be a bit of a problem, but is there anything special with her?”

“She is a “key”. The key to unlock the seal of ruins, she has that kind of power. In order to reach a deep level where humanity has never gone in until now.”

“Then––”

“Yeah, I want to entrust it to you. Therefore, it doesn’t matter whatever means you use. Be sure to conquer (subdue) her and by using her power –– I want you to wrench the doors of the ruins open. If you do so, I’ll leave half of the ruins’ treasures and this country’s rule which will someday fall into our hands to you.”

“Kuku, I understand. That woman seems to be quite proud, but such a female is worth breaking. I’ll live up to your expectations, my friend.”

Barzeride shook his shoulders and joyfully laughed.

As he imagined his military rule in the future.

“Well then, I will take my leave. You don’t need to see me off.”

“Yeah, see you again, my friend.”

Saying only that, the existence with the robe soundlessly left the mansion.

After Barzeride went up to the second floor of the mansion, and saw with his own eyes from the window that the figure disappeared in the alley,

“Hmph. Don’t think that you can tame me forever. Well, it’s fine; if you say I can use whatever means, then there are many measures to consider.”

Saying so, Barzeride tightly grasped the Sword Device at hand and clicked his tongue.

“I’m looking forward to it. This country’s next King ––will be me.”

“Phew..”

It was the day after they agreed to a duel with Barzeride.

Lux who welcomed lunch break in the classroom was a little sleepy.

Since he handled a classmate’s request today from earlier this morning, he was a little tired.

This was because he thought that it wasn’t good that he gave so much priority to Krulcifer’s request that he hardly listened to other girls’, but––

(As expected, I overdid it a little, I guess..)

On account of his life of odd jobs, when it grew dark, he went to bed and made sure to relieve fatigue for the next day’s work, but, since he came to this academy, he had worked even more as much as he was usually taken care of.

He didn’t know whether or not she guessed it, but Krulcifer unusually released Lux saying “I have some business to take care of today”.

Though it wasn’t a bad feeling to live as Krulcifer’s “lover”, as expected spending time with her who was much more elegant than him was unexpectedly nerve wracking.

Thus, when it had been long since he lazed; lying down on the desk, Tillfarr, one of the Triad, gently poked the shoulder of Lux who was half asleep.

“Oh my, I see that your girlfriend isn’t here today. Lux-cchi, you’re lonely, right?”

To the carefree smile like a flower, Lux raised his face with a wry smile.

“Errr, is it for a work or something?”

“Oh, you may say that, I guess? Seems like you’ve been abandoned. Then, can you tag along with me a little?”

Tillfarr naturally took Lux’s hand and left the classroom with him.

Other students who were withholding due to the matter of Krulcifer’s “lover” were showing faces saying “damn it, I was late”.

“Okay. It’s here.”

When they walked down the corridor a little, they arrived in front of a certain room before he was aware.

“Huh? This is the drawing room, but––?”

It’s originally a room for visitors or guests, but is it all right to enter now?

As Lux was thinking so,

“It’s all right. There is no plan for it to be used today, and we got permission from the Principal. Well then, I’ll go prepare, so wait. Ah, peeping is forbidden.”

The mastermind Tillfarr who brought him along left Lux and went somewhere.

“What on earth does this mean..?”

Rather, what does she mean by peeping?

Lux sat on the sofa while being puzzled, but probably because of fatigue, he had fallen into a light sleep.

“N, Ngh..”

“Sorry to keep you waiting! Then, excuse me!”

When he suddenly woke up and raised his face, he heard a knock on the door and then Tillfarr’s voice.

“Ah, welcome––, wait, eeeeh!?”

Lux who was still half asleep couldn’t help but doubt his own eyes as he saw the outfits of the girls who entered.

“––I’m coming in, Lux.”

“Lu-chan. You’re drooling.”

Standing there were Lisha and Philphie dressed in unfamiliar maid outfits.

Following after them was Tillfarr holding plates of food in both hands.

“So, in order to heal Lux-cchi’s daily fatigue, let us serve you. Master, rest slowly.”

Looking at Tillfarr’s who winked and the other two’s appearances, Lux opened his mouth flabbergasted.

It was a plain black maid outfit with a white brim, but as the clothes were a little customized, the skirt was cut rather short.

As for Philphie, her big breasts were also emphasized and it was a very bewitching appearance.

“Errr –– what is this?”

“Well you know, master. I was also consulted by Lisha-sama as to how to make Lux-cchi happy. Because the Princess says that she doesn’t really know what can make a man your age happy, so––”

“H-Hey. You promised not to say that, right!?”

At Tillfarr who openly talked, Lisha blushed in panic.

“––And then, we reached the conclusion that imagining the scene of the time when Lux was a Prince, and serving you as maids was the most pleasing to do.”

“But, I hadn’t gotten maids to take care of me that much––”

“Then, you should use this opportunity to fully enjoy it. We’re all amateurs though.”

As expected of the class’s mood maker, she forcibly pushed forward the talk.

Then, she began to display the dishes on the table.

Since it was just lunch time, too, they seemed to want him to eat here.

(Is it all right to do something like this in the academy’s drawing room..?)

Though it isn’t as if Lux didn’t think so just a little,

“Um –– Is it troublesome? Doing something like this suddenly..?”

Looking at Lisha in her maid outfit averting her eyes slightly embarrassed, he changed his mood.

“No, I’m very happy. Thank you, Lisha-sama.”

“....!? N-No, um –– f-for the time being today, you may think of me as being your maid and do somewhat indecent things like when you were young..”

“I won’t do that!? What do you think I was when I was young!?”

“I-I see. Tillfarr said that such things seem to be a maid’s work, too..”

“........”

As Lux turned a surprised look, Tillfarr whistled acting as if she knew nothing.

Though Lux found it really troublesome, he was honestly happy that they were concerned about him who was tired.

“Lu-chan. The meal will cool down.”

“Since it’s a rare opportunity, a maid will feed you. Lisha-sama.”

“....!? A-As expected, that’s more embarrassing, or rather––”

“..Shall I do it?”

“N-No, let me do it after all. Can I, Lux!?”

Though Lisha was somewhat reserved, she said so as to oppose Philphie.

Then, she picked up a sandwich put on the plate and held it out to Lux’s mouth.

“U-Um, thank you for the meal.”

Since the other two were watching steadily, it felt somewhat awkward, but Lux ate the sandwich from Lisha’s hand.

It had the taste and texture of fresh vegetables, ham, eggs, spices, and sauce.

Since there was also the fact that Lux was also hungry, the sandwich which seemed to be homemade smoothly went into his stomach.

“U-Um, how is the taste? Just to note, we had the dining room’s cook help us with it––”

“It’s very delicious.”

As he replied so to Lisha in her maid outfit who asked with upturned eyes,

“Haw..!?”

Lisha blushed and stiffened on the spot.

“Lux ate it.. It’s somehow very exciting. Doing something like this.”

While leaking a seductive sigh, Lisha carried the sandwich to Lux’s mouth with tottering hands. The dish which was put on a large plate was eaten in no time.

“Here, water. Afterwards well, let’s see; shall I massage your shoulders?”

As Lisha was looking outside from the window from the room with an entranced expression, Tillfarr gave him water and gently massaged Lux’s shoulders.

Then, Philphie who was silent until now also put a large plate on the table.

“I made a dessert.”

“T-Thank you –– wait, the dessert after the meal is this!? Isn’t it a little unreasonable!?”

It was a circular pancake –– no, it which was made in seven thick layers could already be regarded as a cylinder.

When Lux hurriedly questioned so,

“..Lu-chan is, cold. Even though you gladly ate it long ago.”

Abruptly looking away as if her pride was wounded, Philphie sulked.

Pancakes were certainly Philphie’s specialty when they were young, but––

“N-No. I like this, too. It wasn’t so much in the old days –– b-but, it’s so nostalgic, I’m happy.”

When he hurriedly corrected himself like so, Philphie’s good mood returned as she said “really?”.

“Then, let’s eat together. We can finish it if we eat together.”

Philphie showing a gentle smile and Lux began to eat the pancake tower together.

After eating two layers, Lux was down and unable to continue; in the end, Philphie ate up the rest in the blink of an eye.

Though it was quite interesting and was a feast for his eyes, Lux thought at last with a wry smile.

(In the end, the three of them were not maid-like at all..)

“Oh, you finally came! I was waiting for you, Lux.”

Then –– After school of that day.

Lux showed up in the Drag-Knight’s atelier by Lisha’s request.

The unique smell of metal and oil which acridly assailed his nose.

And, countless assembled Machine Dragons standing in a row was a magnificent view no matter how many times one saw it.

One could understand by seeing that Lisha had put on a white gown on her uniform, and was doing her work as an engineer.

“Errr, so, for today’s work––”

“W-Well.., leave aside the talk of work for the time being and make yourself comfortable. I’ll get you some tea now, so––”

“Oh, then I’ll do it.”

As Lux offered so due to his usual odd jobs’ habit, and was about to head to the small kitchen located in the back of the atelier.

“No. There’s no need. I, the younger one, should do it.”

“You should just sit down there, Nii-san.”

“Huh..?”

Standing there were two familiar girls, his little sister Airi and her friend Nokuto.

“Why are you here, too––?”

“We had a little business regarding Machine Dragons; since it’s a rare opportunity –– are we in your way? Nii-san.”

Airi said with a somewhat implying smile.

“Ah geez, Lux! Come back here!”

Lisha who saw that called out to him from the sofa.

“Geez, I can at least explain it by myself..”

Judging from Lisha somehow discontented, Airi and Nokuto seemed to have forcibly intruded on here.

After a while, tea poured into cups was carried, and Airi and Nokuto also sat down before the work unit.

And, Airi spread several sheets of papers there.

“This is––”

“Yes. It’s the output analysis result of <Bahamut> that Nii-san uses. I observed the last battle on Nokuto’s <Drake>.”

“........”

Lux slowly looked over the bunch of paper.

Starting with the estimated output when he used the Divine Raiment, detailed records such as the estimated time of operation limit were written.

Airi probably collected them over many hours for Lux to use <Bahamut> someday.

By increasing the output, one would be able to momentarily generate a strong power, but in return, the consumption would be huge.

A precise adjustment of the output of the Drag-Ride and each armament was carried out in accordance with the ability and aptitude of the user.

However, unlike a general-purpose Machine Dragon, for a Divine Drag-Ride whose existence was confirmed and it was said that there was only one for each species in the world, there was no standard value of adjustment, and it was the present fact that analyses aren’t readily advanced.

Especially regarding <Bahamut>, since Lux could not afford to use it very often, time was required to analyze it.

But––,

“While looking at it, I made a fine output adjustment to <Bahamut>. As expected, it was hard to do it until now since there was no data. I cut the output which is likely to be vainly used as much as possible, so I think you can fight quite easily more than before.”

“Thank you, Lisha-sama.”

As Lux turned a smile, Lisha suddenly blushed and averted her eyes.

“Ah, yes.. If you say it like that, then it was worth my doing my best. U-Um, as a reward, if you could hold me––”

“Nokuto and I also helped, Nii-san.”

“Ah, thank you both of you.”

“Yes. I feel obliged.”

“––H-Hey!? I haven’t finished talking yet!”

Ignoring Lisha who shouted from behind, Airi continued the talk.

“By the way, it doesn’t mean that I want you to fight for a long period of time. So, please do not act rashly. That –– you understand, right?”

“Ah, yes. I know.”

To Lux’s smile, Airi also returned a smile.

“With that said, Nokuto. I cannot trust Nii-san, so I can only rely on you.”

“Yes. Roger, Airi.”

“Hey, hey!? What do you mean? You don’t trust me!?”

“It’s obvious, right? Even though you always ignore my advices and rampage as you please.”

“........”

When being told so, he thought that she was actually right; so his ears hurt.

“Well, in tomorrow’s ‘Abyss subjugation’ and ‘ruins investigation’, as expected I don’t think <Bahamut> should be used.”

Lisha suddenly muttered as she folded her arms.

“Ah, speaking of which––”

The ruins’ investigation by “Knight Squadron” that he was told about by Relie.

The day for that to happen should be tomorrow.

The objective was the subjugation of a Golem, a large Abyss which appeared around the ruins.

As well as the sixth ruins –– Garden’s investigation.

Originally, that mission would be carried out by a unit whose members were half composed of those elected from the “Knight Squadron”, but this time by Relie’s recommendation, Lux was also going to tag along as an exception.

Of course, he could not afford to let <Bahamut>’s existence be known to the other members of the “Knight Squadron”, so he did not want to act too much rashly, but––

“Don’t worry. After all, the commanding officer this time is me.”

Drinking tea contained in the cup, Lisha stuck out her chest.

“While we are it, I also prepared the most recently drawn map of the “Garden”, so please keep it in mind during this evening.”

“Ah, yes. Thank you.”

Lux nodded and thanked Airi’s consideration.

The ruins were labyrinths whose existences had been confirmed to number seven in the world presently and in which ancient technology slept.

Drag-Rides, Abysses and unknown technology.

This place was an existence which brought various things in the world and prompted rapid evolution and development in these past ten years.

Among the three ruins which were in the territory of and around the New Kingdom, the sixth ruin, the “Garden” was the place where investigation had advanced the most in the present situation, but even so –– its whole aspect had not been clarified yet.

But, since it was a matter which had continued since the Old Empire era, it was a path which could not be avoided.

“This time, as expected Krulcifer won’t tag along. So, you may rely on me without reserve, Lux.”

“Is that so?”

To Lisha who tapped his shoulder smilingly, Lux returned so.

“Yes. In her case, there is that “condition” after all.”

Krulcifer was a foreign student of the country Ymir.

Therefore, on the occasion of fighting in this Atismata New Kingdom, her unique standard was determined.

When it came to the subjugation of a dangerous Abyss, Krulcifer should basically not participate.

(I wonder if she’ll be right by herself. Krulcifer-san..)

However, Lux was anxious about going and leaving her alone.

It should be the safest if she didn’t go to the ruin investigation, but––

“Okay, this talk is over. Therefore, how about you young girls go back? I want to talk with Lux about a slightly personal matter, you see?”

“A talk?”

“Ah, yes.. well.”

When Lisha was about to begin talking,

They heard a light knock.

“Good evening!”

Before they could reply, opening the door and entering was Tillfarr of the Triad.

“What are you all doing? It looks very interesting, so let me in.”

“As usual, you’re someone who can’t read the atmosphere..”

Lisha turned reproachful eyes at the cheerful Tillfarr and sighed.

“Why did you come here for? Tillfarr.”

As she couldn’t just watch that without doing anything, Nokuto also of the Triad asked just as amazed.

“Well, there is a message for Lux-cchi. From Principal Relie; she said that tonight after about five o’clock––, you’ll be able to enter the bathroom.”

“Ah, I see.”

At these words, Lux also forgot their talk about the ruins and stood up.

About the bathing in the girl’s dormitory, Lux was basically prohibited from going in, but there was a certain period of time when he could use the bathroom; about once a week.

When the female students finished their bathing and there were no other users, he was called out by the manager such as the dormitory leader and was allowed to enter all alone.

Since he usually got it over with only wiping his body with a towel dipped in cold or hot water, bathing was a rare opportunity for Lux.

“Then, even if I go––”

“Hmm.., it can’t be helped. Let’s call it a day. Let’s talk about this another time.”

With Lisha’s permission, Lux left the Machine Dragon’s atelier.

And he went straight to the large public bath of the girl’s dormitory.

“Phew. It’s been a while since I was in a bath––”

He carefully knocked on the door of the dressing room and bathroom, and after having confirmed that there was nobody inside, he put the plate “under cleaning” outside and took off his clothes.

Although he had properly gotten permission from the Principal, as expected he couldn’t help being nervous just by being in the bathroom of the girl’s dormitory.

Marble pillars, and the large bathroom which lamps faintly illuminated.

After dashing hot water over himself at the washing place, he slowly washed his body and finally immersed his whole body into the bathtub.

I was regularly bathing in my Imperial Court life when I was young, but after beginning my life of Chores, I was hardly able to take a proper bath; so this is also a side benefit, Lux thought.

He relaxed his whole body and entrusted it to the buoyancy of hot water.

The sensation of his muscles, which got tired with daily odd jobs and training, getting loose was comfortable.

“Haa..”

Originally a time of the supreme bliss that he could rarely taste.

Nevertheless, there was a certain concern in Lux’s head.

It was about the duel over Krulcifer’s engagement.

There was no problem to the fact that it had come to a duel –– to the fight itself.

However, aside from the woman butler Alterize, Barzeride was a dangerous opponent.

And, he was also worried about Krulcifer who had also decided to fight.

(I don’t really understand though. She doesn’t seem to have a very good relationship with her home––)

Of course, since it was about Krulcifer, she was probably doing well; but it somehow felt like she did not trust the members of the Einvolk House.

This might be because Lux, who was treated as a parasite among the imperial family before, put himself in her place that he ended up thinking so.

“........”

Lux gently closed his eyes while being soaked into the bathtub.

Tomorrow, Lux would join the ruins investigation by the “Knight Squadron” for the first time.

“I hope we’ll be able to come back safely––”

As he talked like so to himself.

“Eh––?”

When he spontaneously opened his eyes and looked at the figure hidden in the white steam,

“.... Huh?”

A familiar pink-haired girl looked at Lux with her absentminded eyes and tilted her head to the side.

“––Wait, eeeeeeeeeeeeeh!?”

Standing with a splashy sound, Lux could not help but draw back in the bathtub.

As he flung his back on the wall, he finally grasped the present situation.

“It’s rude. Lu-chan.”

When Philphie who let her hair down said so with a serious look,

“Ah, s-sorry–– not that!? Why is Phil..Phi-chan here!? Um, wasn’t there a plate “under cleaning” outside!?”

“It’s because I came back late for training today. Onee-chan said that the bath is still opened––”

“........”

At her indifferent words, Lux guessed.

This situation was definitely Philphie’s mischievous big sister, Principal Relie’s doing.

“Geez, what is she thinking!? That person..!”

No matter if they were childhood friends, she should not let a young lady and a man their age sleep and take a bath together.

It looked like Philphie herself did not mind it, but there was a problem after all.

“S-Sorry. W-Well then, I’ll immediately go out, so––”

As Lux, thinking so, was about to get out of the bathtub,

“––Why?”

Philphie returned a straight face.

“No, after all!? Even Phi-chan hates it, right!? To take a bath with me, a man––”

As Lux confusedly said so,

“I will never take a bath with a man I don’t like.”

Bending her head slightly to one side, she replied with a serious look.

Lux’s face reflexively became red

“N-No, I’m not talking about that––”

When Lux said so while covering his eyes with his hand,

“It’s been a long time since I took a bath with Lu-chan. It’s really nostalgic..”

Philphie smiled as she said so in a hearty tone.

“........”

Her tone looked really happy for her, who was usually taciturn, and Lux somehow hesitated about getting out of the bathtub.

(N-No, but––, it doesn’t change the fact that it’s ethically wrong!)

Within his whole body conflict and embarrassment seethed, Lux threw a fleeting glance at the figure of Philphie slightly away.

It was beautiful.

Her big amber eyes and her flushed cheeks.

Her fluffy pink hair got wet and slightly stuck on her skin.

And, her white, firm skin and big chest which floated in the bathtub––

(Wait, looking more than this is bad..!)

Lux looked away and somehow maintained his reason which almost collapsed unintentionally.

As he threw a fleeting sidelong glance at Philphie after calming down after several deep breaths––

“..Kukah”

“She actually fell asleep!? Wait, you can’t sleep here, Phil––”

Unintentionally drawing near, he lightly shook Philphie’s shoulders soaking in the bathtub.

Her vivid body temperature and the feel of her smooth skin.

The rich swelling which shook together with Philphie shaken back and forth.

(W-Wait, I can see her breasts..! From the front is bad!)

Lux’s gaze was attracted to her half exposed big chest floating in the hot water, and his throat quickly got dry.

In order to restrain himself, as he got up from the bathtub at once, put his hands on Philphie’s shoulders from behind and lightly shook her––

“Huh––?”

For an instant, a strange sense of discomfort cooled down Lux’s mind.

Lux himself, not knowing immediately the reason, stiffened for about several seconds.

“Ngh.. what’s wrong? Lu-chan”

“N-No.. M-More importantly, you shouldn’t sleep in the bath, Phi-chan.”

“..Yes. Thank you.”

Philphie who woke up turned her head to thank him.

So as not to see her naked body over the transparent hot water, Lux, after averting his eyes, finally realized the true identity of the sense of discomfort.

“H-Hey, Phi-chan”

“..What?”

“Wasn’t there scar on your back? A small one diagonally from the right shoulder––”

“..Maybe there was. I don’t really remember though.”

With slow movements, Philphie passed one hand onto her back and traced it with a finger.

Right, I’m sure there should have been one.

Lux remembered having heard that it was a scar she had gotten by having fallen down in her childhood before meeting with him.

It was not that deep a scar, but one could tell by sight that it was an old wound.

But, as far as Lux saw a while ago, the scar had neatly disappeared.

Could the wound which left a scar that remained from the time of childhood be healed at this age?

“Lu-chan. Be careful tomorrow.”

“E-Errr..?”

Lux came to his senses at Philphie’s voice.

“You’re going to the ruins, right? I won’t also be able to go with you this time due to orders. It’s regrettable, but I was told so by Onee-chan.”

He had the feeling that slight loneliness was mixed into her usually leisurely tone.

It seemed that she wouldn’t be able to sortie together with them as a member of the “Knight Squadron” this time, too.

Although a military power to protect the Fort City was also necessary, it isn’t like that problem did not occur to him, but

“Y-Yes. It’s all right. I’ll come back again properly.”

As he promised so, Lux, after having allowed Philphie to get up first, left the bathroom.

–– About ten minutes later.

In order to pass time so as to not see Philphie changing her clothes, it seemed to have been a longer, leisurely bath than he thought.

It took a while for Lux, who felt dizzy, to return to his room.

And––, the morning of the next day.

Lux and the members of the “Knight Squadron” had gathered to the waiting room of the practice field for the mission.

The objective was the subjugation of a Golem, a large-sized Abyss which wanders around the ruins, and the internal investigation of the sixth ruins “Garden”.

Lux and company were exempted from today’s lessons, and it was scheduled that they would return before the tomorrow evening

The members who would sortie were about 14 people.

It was planned that after defeating the large-sized Abyss –– Golem, a few elites with remaining power among them would enter the ruins.

––No, they intended to do so.

“Well then, I will inform you of a few points about the change of plan of today’s strategy execution.”

Instructor Raigree said with a slightly bitter face.

As the one supervising the strategy this time, it plainly showed that an unexpected and troublesome incident happened.

“First of all ––I will have the foreign student Krulcifer exceptionally participated in this strategy. Her participation to the strategy was strongly requested by the person herself. She asked not to have special treatment and to carry out the mission as a member.”

“Eh..?”

“Why did Krulcifer-san––?”

The members of the “Knight Squadron” could not help but leak out voices of surprise.

Lux also felt the same way.

Even though by order of the country Ymir, she should’ve said that she would not get involved in dangerous missions––

“Please, take care of me. Everyone”

-->>

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