Bestiary No. 1: Human
Bestiary Entry No. 1 — Human
"Um, excuse me?"
A voice suddenly called out in front of me, and I lifted my head.
"Here — your Adventurer Card."
A beautiful woman was holding a card out toward me.
But just moments ago I'd been about to settle in and enjoy an adult game in my room. I had no idea what was going on.
"D-do you have any questions?"
The woman's face had flushed for some reason, and the person behind me cleared his throat pointedly.
"Ah! My shift ends in a few minutes — could you wait just a little while?"
"Uh, sure…"
"Thank you! Th-then, next please!"
Before I knew it, I'd made an arrangement with her. The man behind me glared daggers as he stepped up to take my place.
Only after I moved aside did I finally take in my surroundings.
A massive building with marble pillars spaced throughout. Multiple receptionists, and dozens of people lined up in front of them.
Dozens of papers were pinned to the walls, with crowds gathered in front of them, studying the notices carefully.
It was a scene that could not possibly belong to the modern world.
I sat down at one of the many tables in the center of the hall and tried to make sense of my situation.
After university classes, I'd downloaded a newly released adult game onto my computer. I'd customized my character, picked my perks — and then opened my eyes here.
There was no doubt about it. I'd been pulled into that game.
"Fuck… If I'd known this would happen, I would've picked Easy Mode!"
People around me stared like I was a lunatic, but the situation was too serious for me to care.
This game's difficulty scaled with the perks you chose. Pick strong ones and the difficulty rose; pick weak ones and it got easier.
The perks I'd selected were all high-performance. Meaning the current difficulty was Hardcore Mode.
The real problem was… I didn't even know what kind of game this adult title actually was. I'd just assumed it was another generic medieval fantasy smut game.
I hadn't cursed the game out. I hadn't cleared it. I hadn't even sent a 5,700-character complaint email. So why the hell was I here?!
"F-first things first — let's look at this."
If this really was Hardcore Mode, I didn't have time to sit around fuming.
I hurriedly examined the card the receptionist had given me.
Name:Rian
Rank:Bronze
Level:1
Perks:[Short-Lived Beauty], [Swift Resolution]
Skills:[Low-grade Unarmed Combat]
Mission:Have sex with a new species
— Failure Penalty:Death
— Time Remaining:23 hours 59 minutes
Bestiary:0
The receptionist had called it an Adventurer Card, but to my eyes it was unmistakably a status window.
I'd glanced at other people's cards, but their contents were invisible — so it seemed only the owner could see their own.
"Th-those are the perks I picked…"
The card listed the exact perks I'd chosen, plain as day.
All women perceive you as their ideal type.
Mission difficulty increases.
Required experience points are drastically reduced.
Mission rewards increase by one tier.
Mission difficulty increases.
Since this was fundamentally an adult game, women's affection was critical — so I'd taken Short-Lived Beauty. And for rapid growth, I'd taken Swift Resolution.
Below that was a skill. I'd chosen it because it was the only one that didn't require starting equipment.
And then…
"F-fuck… I've only got a day left?"
Even for Hardcore Mode, wasn't this excessive? Die if I don't have sex?!
And what did "with a new species" even mean?
Could I even manage to have sex within a day?
Should I go to a brothel? Ah — I don't have any money.
I was clutching my head, deep in frantic thought, when—
"Um… excuse me…?"
Someone tapped me on the back.
I turned around to find the receptionist from earlier — only now she was in casual clothes instead of her uniform.
Right. She'd said she'd answer my questions if I waited a bit. But working even after clocking out…?
"You said you had questions earlier, right?"
"Ah… actually, I don't have any. Sorry for bothering you."
"N-no, it's fine! Then… do you have any plans after this?"
I looked at her face. Her ears were burning red, and she looked thoroughly embarrassed.
Come to think of it, I'd put a lot of care into the customization — even to my own eyes, this body was a strikingly handsome man. And with the Short-Lived Beauty perk on top of that…
"No, nothing in particular."
"Ah! Th-then how about a drink tonight? To celebrate becoming an adventurer…"
"Sounds good. Honestly, I did have quite a few questions. I just said I didn't because I didn't want to be a bother — so this works out perfectly."
If I played this right, I might not die today after all.
I stood up and left the building with the receptionist.
"Hehe, Rian? It's getting late, hic! Do you have a place to stay?"
"Nah… I just arrived in this city today. Went straight to the Adventurer's Guild the moment I got here — didn't have time to find an inn."
"I-is that sooo? Th-then how about spending the night at my place?"
The receptionist's name was Reina. We'd gone to a tavern together and drunk ourselves silly.
Back in my old body, a single glass would have turned my face red — but this one didn't get drunk no matter how much I put away.
So only Reina ended up thoroughly wasted, and under the influence of the alcohol, she invited me back to her place.
"If you're fine with it, Reina."
"U-uuugh! So embarrassing! Let's go already…"
When I whispered against her ear, her face went even redder. That adorable reaction eased some of the anxiety that had been gnawing at me.
Have sex with a new species.
— Failure Penalty: Death
— Time Remaining: 16 hours 30 minutes
I'd entered the game around three o'clock. It was about eleven now. Sixteen hours remaining.
But I was about to clear the mission soon enough.
"C-come in."
"Pardon the intrusion."
Her house was an ordinary home. Her parents lived elsewhere, she said, so she was on her own.
"That's the bathroom… I-I'll wash up first."
Reina hurried into the bathroom.
The setting was medieval, yet the conveniences rivaled the modern world. Probably because this was an adult game.
I looked around her house. There was a refrigerator and an oven — Magic Tools, powered by magic stones and magic.
— Shhhhhh!
The sound of running water came from the bathroom. That shower was probably a Magic Tool too.
Listening to the water, my heart started pounding. Because I was about to have sex with her.
Objectively speaking, Reina was extremely beautiful. And I was going to do it with a woman like that…
I was still anticipating it when Reina came out of the bathroom.
Her cheeks were flushed from the heat and the alcohol, and tiny water droplets clung to her damp, glossy hair.
"Th-then it's your turn, Rian…"
She stepped out, and I went into the bathroom. Wet floors, a fogged-up mirror. Even a robe and towel set out for me.
I turned on the shower and soaked myself in hot water. After washing thoroughly with shampoo and soap, I came out to find Reina already changed and sitting on the bed.

"W-well? How do I look?"
"You're beautiful."
"…Th-thank you."
I gently laid her down on the bed.
Reina kept looking up at me with moist eyes.
After staring into each other's eyes for a few minutes, desire began to well up in earnest.
— Chup.
I lowered my head and pressed my lips to hers. The moment our soft mouths met, the two of us began exchanging saliva in a feverish rush.
Reina was awkward, just holding her mouth open, so I took the lead. I moved my tongue aggressively, exploring every corner of her mouth.
"Mmph…!"
It was a vulgar kiss. But there was no better way to get a woman heated up.
Reina's eyes were squeezed tightly shut. She was so tense it was almost funny. Carefully, I began undoing her clothes.
With every fastening I released, her body gave a little twitch. I stroked her back gently, and her rigid frame gradually loosened.
And at last—
"Ah…!"
Her clothes were completely off.
I wasn't about to miss this sight.
I broke the kiss and looked down at her body.
Skin as pale and smooth as white jade, her hands covering her nipples. But that only made my lust burn hotter.
"I-it's so embarrassing…"
"Then let's be embarrassed together."
I untied my robe and stood naked as well.
I'd already seen myself in the mirror, but this body really was sculpted like a statue. Reina stared at me in a daze.
Seizing her moment of distraction, I pulled her hands away. The pink nipples they'd been hiding came into full view.
"A-are my breasts weird or anything?"
"They're gorgeous. So pretty I want to nibble on them."
"Ahn?!"
I took her nipple into my mouth. Rolling the stiff, erect bud with my tongue drew a moan from her lips.
So the other side wouldn't feel left out, I flicked her opposite nipple with my fingers.
The milky scent of her breasts filled my mouth. That rich aroma made me regress on instinct, suckling like a baby.
"Hehe, you're like a baby."
"Ever seen a baby with a cock this big?"
"Ah!"
I settled my cock onto her stomach, the part of me I'd been hiding with my body.
I'd put special care into this particular customization, and when I revealed the result, she swallowed hard.
Her pussy was already slick and wet. But before putting my cock in, a pussy deserved a proper kiss first.
I spread Reina's legs and lowered my head between them.
"Aaah! Wait—! That's embarrassing!"
"What are you talking about? It's nothing but pretty. Here we go!"
"Hic♥?!"
I dragged my tongue from the bottom of Reina's pussy all the way up to her clit. Her body went rigid at the sudden stimulation.
Taking advantage of that, I parted her outer lips and pushed my tongue inside.
"Kyaahn♥!"
The taste of her juices was tangy and lewd. As I swirled my tongue this way and that, Reina's hips moved in the same direction.
The hands that had been pushing my head away reversed their force, pressing me even tighter against her pussy.
By the time I was practically washing my face in her fluids, she finally let me go.
"I-I'm sorryyy. It just felt too good."
"I'm the one who's honored. Now then…"
"Y-yeah…"
I settled into position between her legs.
It was time for the main event.