From the Melon Books bonus paper for volume 2. Around chapters 66 to 68.
To put it simply, Mia looks like a girl.
If she were human, I'd say she's in her late teens. She's definitely not an adult, but calling her a child is difficult too; she’s more like a budding flower about to bloom.
That said, according to what I've heard, she's actually older than me—older even than my parents' generation, past the age of sixty.
Despite that, she still acts and looks just as young in terms of both emotion and knowledge. It's hard not to treat her like a younger sister... but then again, it raises the question of where exactly is this acceptable?
I mean, I've had Jeanne too, who’s even more questionable if you only look at how she appears.
Even though we technically signed a contract for “naughty things,” dragon customs are different from ours. She herself has immense power, and so does her family. We don’t want to step on any toes by overstepping our bounds.
Yes, judging based on common sense only works when both parties share the same values. It's not uncommon for something minor to be completely unacceptable in another’s culture.
So then,
"Mia, I need you to be honest with me."

“?”
Polka’s inn.
She clapped her knee and approached Maya again.
Maya tilted her head, looking puzzled.
“I’ve heard that dragons will do anything for their riders. But I want you to tell me the truth. I want to know your limit. Things like ‘I don’t really want this’ or ‘please stop now.’”
“Sexual stuff?”
She asked seriously.
Again, she was beautiful.
Transparent and delicate, pure and serene.
A girl who embodied the very concepts of “winter” and “ice.”

I've felt an aura of untouchability from some girls I’ve met before, but with Maya, her attitude is so precarious that it makes me feel like she might really not be someone for me to touch.

I stare at her perfect face for a few seconds and nod bravely.

"Yeah, well, I want to draw the line somewhere… But I don't know anything about dragon customs."

"...I think you can probably accept almost anything as long as it's what you imagine."

"My imagination isn’t just some ordinary thing. Don’t underestimate me because I look like a scrawny boy."

I clench my fist and threaten her.

True, I may not have any muscles or manly facial hair or chest hair, but don't assume that everything about me is weak just because I don't look tough on the outside. A man can keep a beast in his heart no matter how frail he looks.

Maya makes a slightly troubled face and continues speaking.

"Um... for example… while doing it with an axe you could hit my ○○, or after cumming inside me, you could bite my ○○."

"Hold on."

I stop Maya from suddenly talking about suspense horror in earnest.

"Can you not start off with such hellish madness?"

"...? I was just saying that there are actual riders who did stuff like that..."

"I'm sorry. Could you tone it down a bit more?"

"...Lyras-sama can regenerate her own injuries and wounds, so even something like that could be an expression of love. If Andy-sama likes that kind of thing, I'd be happy if he does it honestly, even though it might look painful..."

"That's not the kind of thing you can just brush off with one word."

And what is this, the dark side of history? Even if she said we could do whatever we wanted, why would someone try something like that. It’s not just wild beasts. Why did they choose such a thing.

"I'll probably only ask to suddenly get naked or show my butt along with everyone else."

"...? You prefer being naked? If Andy-sama likes it better that way, I can be naked all the time..."

...Maya was originally part of the naked tribe.

“N-no, only when I’m feeling turned on. Otherwise it’d be a problem if I did that all the time.”

“You could always stay in position next to me, ready for anything whenever you feel like it.”

She was transparent and delicate, innocent and serene. And yet she said this as though it were perfectly normal, sitting on his lap and looking up at him.

“So please take good care of me. I won’t mind anyone watching if you do. That’s how it is with dragons.”

“…I’ll definitely take care of you then,”

“I’ll do anything for you. Whether it’s your front or backside, hands or mouth—I’ll serve you however you want… If you tell me to fight, I will; and if you say kill them, I will. No matter who they are. Isn’t that how it is with Lady Rila too?”

“…Since you’re so cute, stop saying things like that. I think the best way to use a cute girl is to look at her, kiss her, touch her, and fuck her.”

“…Hehe. Yeah,”

It was an awful thing to say, but Maya looked happy.

I want to make this pitiful master happy.

From the bonus paper included with the Melonbooks edition of Volume 2 of the light novel. Roughly around chapters 66–68 of the main story.

If I had to describe Maia’s appearance in a single word, it would be "girl."
In human terms, she’s around her early teens. She is by no means an adult, yet it is difficult to definitively call her a child—she is at that age like a bud just beginning to bloom.
That said, according to her story, her actual age is older than mine; in fact, she apparently exceeds even the parent generation and is well past sixty.
Despite that, in terms of both her emotions and her knowledge, she is exactly as she looks, so I find myself treating her like a much younger sister... and when that happens, the question of "how far is too far" inevitably weighs on my mind.
I mean, Jeanne was around before, too. Actually, in terms of looks alone, Jeanne is even more extreme.
No matter how much I claim, for the sake of appearances, that "we entered this contract to do lewd things," dragon common sense is an alien culture. Not only does she possess immense power herself, but her family members, who possess equal or greater strength, are also very much alive. I want to avoid overstepping my bounds and treading on ground I shouldn't.
Indeed, judging things by "common sense" only works when both parties share the same values. It is not uncommon for something trivial to be considered "out of bounds" by the other person's standards.
And so.

"Maia. I want you to be honest with me."

"?"

At Polka’s inn.
I slapped my knee with a thwack and pressed Maia once more.
She tilted her head in confusion.
"I've heard that dragons will do anything for their Rider. But I want you to tell me your true feelings. I want to know where your line is—what you hate, or what you don't want me to do anymore."
"The lewd stuff?"
She asked back with a deadpan expression.

Once again, she is beautiful.

Transparent and delicate, pure and serene.

She is a girl with a presence that feels like the personification of the concepts of "winter" and "ice."

Among the girls I've met so far, I've occasionally felt an aura of "untouchability," but Maia, combined with her somewhat fragile demeanor, strongly makes me feel like "I might not be someone who is allowed to touch her."

I gazed at her perfection—so refined it almost felt artificial—for a few seconds before nodding bravely.

"That's right. Well, I want boundaries for everything... but I don't understand dragon common sense at all."

"...I think that, as long as it's within what you imagine, Andy-sama, I can probably accept anything."

"A man's imagination is no joke. Don't underestimate me just because I look like a scrawny boy."

I clenched my fist and threatened her with conviction.

It's true that I lack burly muscles, a manly beard, or chest hair, but I'd be in trouble if she assumed she could see right through to the depths of my soul just because I don't look rugged. No matter how weak a man may seem, he harbors a beast within his heart.

Maia made a slightly troubled face and continued.

"...Um, for example... while being lewd, using an axe to [redacted] [redacted] or [redacted], and even while [redacted] inside, [redacted] [redacted]..."

"Wait a second."

I cut her off as she suddenly began describing something akin to a suspense-horror movie with a deadpan face.

"Could you please not start with stories that sound like the product of some hellish madness?"

"...? I was just saying that there have been Riders who actually did up to that level..."

"I'm sorry. Please show a little more restraint."

"...Because a dragon's body can regenerate wounds and anything else however we like, just like Lady Lyra did, even that can become a form of love. If you like that kind of lewdness, Andy-sama, I think I'd be happy to do it even if it seems a little painful, as long as you do it with your true feelings..."

"That is not something you can just dismiss with the word 'lewd'!"

I mean, what is this darkness of history? Even if I told her she could do as she pleased, why on earth did a fool exist who actually challenged themselves in that direction? That's beyond a beast. Why would anyone choose that?

"At most, I might tell you to get naked suddenly, or tell you all to line up and show your butts."

"...? Is being naked better? If you prefer that, Andy-sama, I'm fine with being naked all the time."

...Maia was a nudist to begin with.

“N-no, only when you're feeling horny. If it were like that all the time, it would actually be a problem.”

“On the contrary, if you want, you can always be on all fours right next to me, waiting to be 'useful' whenever the mood strikes.”

Transparent, delicate, innocent, and serene.
The girl, who embodied that very image, spoke as if it were the most natural thing in the world, then climbed onto his lap and looked up at him.

“That is why I want you to dote on me plenty. As long as you dote on me, I won't care who is watching. That is the way of the dragon.”

“...Well, I mean, I will dote on you, but...”

“I will do anything. I will serve you with my front, my back, my hands, or my mouth... If you tell me to fight, I will fight; if you tell me I may kill, I will kill. No matter who the opponent is. It is the same for you, Lady Lyra.”

“...Stop saying stuff like that; you're far too cute for it. Personally, I think the most effective use of a cute girl is to look at her, kiss her, touch her, and creampie her.”

“...Ehehe. Yes.”

It was a terrible thing to say, even by my own standards. But Maia looked happy.
As a pathetic master as I may be, I wanted to make her happy.

From the Melon Books bonus paper for the second volume. Corresponds to around chapters 66-68 of the main story.

Myia’s appearance, in a word, is that of a girl. If you had to compare her to humans, she’d be a late teen—definitely not an adult, but also hard to call a child. She’s like a bud just beginning to open.

That said, according to what I’ve heard, her actual age is more than mine—no, even surpassing my parents’ generation, and she’s already over sixty.

Despite that, she’s emotionally and intellectually as youthful as she looks, which makes me treat her like an older sister… but then the question becomes: how far is too far?

I mean, I’ve had Jeanne before, you know? Or rather, if we’re just talking looks, Jeanne’s way more dangerous.

No matter how much I pretend we “contracted for erotic purposes,” a dragon’s sense of normal is alien. Besides her immense power, she has family with equal or greater strength. I don’t want to step on any toes and get crushed.

Yeah, judging by common sense only works when you share the same values. It’s not uncommon for something minor to be “a no-go” in their culture.

So…

"Myia. I need you to be honest."

"??"

At Polka’s inn.

I tap my knee and press her again.

She tilts her head, looking puzzled.

"I’ve heard that dragons will do anything for their rider. But I want the truth. What are your real limits? What lines don’t you want crossed?"

"Erotic things?"

She asks with a straight face.

And she’s breathtaking.

Transparent, delicate, pure, serene.

A girl who embodies the very essence of "winter" or "ice."

I’ve sensed untouchable auras in other girls before, but Myia’s aura, combined with her slightly dangerous demeanor, makes me strongly feel like maybe I shouldn’t be touching her at all.

I stare at her too-perfect beauty for a few seconds before nodding boldly.

"Yeah. Well, I want boundaries for everything… but I don’t know anything about dragon etiquette."

"...I think I can accept almost anything Andy-sama imagines."

"A man’s imagination is no joke. Don’t underestimate me just because I look like a scrawny boy."

I clench my fist and threaten her forcefully.

It’s true, I lack bulky muscles, a manly beard, or chest hair, but don’t assume you can see right through me just because I don’t look intimidating. Every man harbors a beast within, no matter how frail he appears.

Myia makes a slightly troubled face and continues.

"...Um, for example… doing erotic things while chopping off someone’s head with an axe, or coming inside someone and immediately stitching them up…"

"Wait a minute."

I stop her dead in her tracks as she suddenly launches into a suspense horror monologue with a straight face.

"Don’t just drop hellish insanity on me out of nowhere!"

"...? I thought there were riders who actually did that much?"

"Sorry. Ease up a bit, please."

"...A dragon’s body can regenerate wounds however they like, like Lady Lila did. So even something like that could be an expression of love. If Andy-sama likes that kind of eroticism, it might hurt a little, but I’d be happy if you just did what you really wanted to…"

"That’s not something you can just brush off as ‘naughty play’."

"Seriously, what the hell is up with history? Even if I was told I could do whatever I wanted, why did a moron actually try that direction? This isn’t some wild beast; it’s beyond that. Why’d you pick that?"

"I’d maybe just suddenly tell you to strip naked or line up and show us your ass all at once."

"…Huh? You think naked is better? If Andy-sama prefers that, I’m fine being naked all the time."

"...Originally, Maiya was a nudist."

"N-no, only when I get horny. It’d be weird if it was always like that."

"Rather, if you feel like it, I can stay right next to you on all fours, ready ‘for use’ whenever you want."

Transparent, delicate, pure, and serene.

The girl with that image said it as if it were the most natural thing in the world, sitting on his lap and looking up at him.

"So, I want you to dote on me a lot. If you’ll dote on me, I won’t care what anyone else thinks. That’s dragon."

"…I’ll dote on you, but…"

"I’ll do anything. Front, back, hands, mouth—I’ll serve you however you like… If you tell me to fight, I’ll fight. If you say it’s okay to kill, I’ll kill. Anyone. Even Lila-sama, right?"

"…You’re cute, so stop with all that. In my opinion, the best way to use a cute girl is to look at her, kiss her, touch her, and then bang her raw."

"…Ehehe. Yeah."

That’s some terrible wording. But Maiya looks happy.

Even as a pathetic master, I want to make her happy.

From the special paper included with Volume 2 of the book edition, covering approximately chapters 66 to 68 of the main story.

If you were to describe Mya's appearance in a single word, there's no other term than "young girl."
In human terms, she'd be around late adolescence. She's certainly not an adult, yet calling her a child would also be difficult—it's that awkward, half-bloomed stage of youth.

That said, according to the stories, her actual age surpasses mine, even exceeding that of my generation; she appears to be well past sixty.
Yet, in terms of emotions and knowledge, she remains just as youthful as she looks. I often end up treating her like a younger sister with a significant age gap... but then the question inevitably arises: "How far is too far?"

Well, there was Jeanne before, after all. In fact, if we're talking about appearances alone, Jeanne's situation is far more precarious.
Even though she officially claims to have contracted for "explicit purposes," dragon customs differ from ours. Not only does she possess immense power herself, but her family also wields comparable strength. I must avoid crossing lines that could provoke trouble.

Indeed, judgments based on common sense only work when both parties share the same values. It's not uncommon for trivial matters to be considered unacceptable by another's standards.

That brings us here.

"Mya, I want you to be honest with me."

"?"

At Polka's inn, I sharply tap my knee and press the matter again.

She tilts her head in confusion.

"Dragons are said to do anything for their Riders. But I'd like to hear your true feelings. Specifically, where exactly is the line you draw—what you dislike or wish never to be crossed."

"Explicit things?"

She asks seriously.

Once again, she's breathtakingly beautiful.

Transparent and delicate, pure and serene—a living embodiment of "winter" or "ice."

Though I've felt an untouchable aura around some girls before, Mya's slightly precarious demeanor makes me strongly suspect that perhaps I'm not even someone she should allow to touch her.

I linger for a few seconds, captivated by her perfection—so flawless it almost seems artificial—before nodding boldly.

"That's right. Well, everyone has their limits... but since I know nothing about dragon customs," I continue.

"..." She pauses. "I think you could accept almost anything up to what Lord Andy might imagine."

"A man's imagination isn't something to take lightly. Don't underestimate me just because my appearance is unimpressive."

Clenching my fist, I threaten with renewed vigor.

True enough, I lack bulky muscles, a manly beard, or chest hair—but don't assume that means I'm harmless deep down. Men, no matter how frail they may seem, harbor wild beasts within their hearts.

Mya looks slightly troubled and continues.

"..." She hesitates. "For example... while engaging in explicit acts, chopping off your arms with an axe, or pulling out immediately after ejaculation only to have them regrow..."

"Wait a minute."

I stop her abruptly as she suddenly launches into a suspenseful horror tale with a serious expression.

"Could you please not start talking about products of hellish madness right away?"

"..." She tilts her head again. "But I was just saying there are Riders who've actually done things that far..."

"I'm sorry. Could you tone it down a bit?"

"..." Her voice softens. "Dragon bodies, like Lady Lyra demonstrated, can regenerate wounds and injuries at will. So even such acts could be considered expressions of love. If Lord Andy enjoys this kind of explicitness, I'd be happy if he did so genuinely, despite the pain involved."

"That's not something you can just brush off with a single word like 'it's sexual.'"
Well, what the hell is this darkness in history? No matter how much you're told to do whatever you want, why does there actually exist such an idiot who chose to go down that path? It's far beyond being a beast. Why did they pick that?

"I'd say at most I might suddenly tell someone to strip naked or stand in line with everyone and stick their ass out."

"……? You mean it's better if you're naked? If Lord Andy prefers that, then being naked all the time would be fine too."

...Originally, Maia was part of a race born naked.

"N-no, only when I feel aroused. If it were always like that, it'd actually cause problems."

"Actually, whenever you feel like it, just make yourself available all the time. You can even stay on all fours beside me waiting."

A girl with an image so transparent, delicate, innocent, and serene spoke as if it were entirely natural, then sat on his lap and looked up at him.

"So I want to be spoiled a lot. If you'll spoil me, I won't care about anyone else's gaze. That's what dragons are."

"……Well, I suppose I will spoil you."

"I'll do anything. Whether it's in front or from behind, with my hands or mouth—I'll serve... And if you say fight, I'll fight. If you say kill, I'll kill. Anyone, including Lady Lyra."

"……Since you're so cute, stop doing that kind of thing. For me, the most effective use of a cute girl is to gaze at her, kiss her, touch her, and have sex with her."

"……Ehehe. Yeah."

I'm quite terrible for saying such things. Yet, Maia looks happy.
Even as a pitiful master, I want to make her happy in my own way.