A Tsundere Name Priscilla

Inside a large room, near the room window, the large moon reflects its light inside, casting its rays on a young infant stationed in a blood-red crib.

Dane lay swaddled in shadows, his glowing eyes fixed on the vaulted ceiling of the monster sanctum.

Two days. He has been in this world for two days.

And for two days he was under Rakasha's loving but extremely clumsy care.

If not for Priscilla's quick thinking and adaptability and her unwavering pride in excelling at everything she does, no matter how new, Dane was certain he'd be stuck with the daily embarrassment of needing these beauties to care for him. Thankfully, the vampire spared him that indignity by crafting an original spell using her magic.

Put simply, Dane was now under an enchantment that ensured he was always clean and comfortable. Every time he soiled himself, his diaper would vanish, leaving him fresh and spotless before a new one seamlessly appeared in its place. It was an odd but incredibly useful solution, sparing him from any discomfort or awkwardness.

But that aside.

There was one problem.

He was bored beyond the concept of the word.

Thankfully, though, he wasn't alone.

『Query detected』

The system murmured, her voice clear in his mind. As she began to speak, saying as such.

『Host appears... restless』

"No Shitttt....

Dane said out loud, but only baby sounds came out, flexing a tiny fist into the air.

"I have been staring at this ceiling for 48 hours. And what's with the blood crib?"

Dane said and asked.

『Clarification: The crib is made from Crimson Shard, a rare byproduct of high-tier vampiric magic. The monster realm is naturally toxic to humans due to the presence of Miasma. However, Priscilla was able to develop a unique spell on the spot... one that allows a human to gradually adapt to Miasma over time while shielding them from its harmful effects. That's exactly what this crib is doing: it's both protecting you from Miasma and helping your body adjust so you don't succumb to its poison』

Explained the system causing Dane to respond.

"I see... sigh, this woman is as reliable as she was in the original game... 

Dane said, as he continued, googoo gagaing from the perspective of others who saw him.

But the boredom was too much, as it made Dane sigh as he said to the system.

"Alright, System... at this rate, I am going to die of boredom... so it is time to earn your keep. Explain this world to me more properly. Let's start off with the Monster Realm."

Of course, the System responded, as it said.

『Well, let me give you a more clear picture. First of all, imagine every supernatural world from every game you've ever played: vampire castles, dragon roosts, slime cities, all smashed together like a collage. That's basically what the Monster Realm is in a nutshell』

Said the System, prompting Dane to reply back with.

"Wait, so it's basically a combination of all the supernatural worlds combined into one?"

『Affirmative. Territories bleed into each other in the monster realm. One minute you are in Nightfall Crowns vampire courts; the next you are dodging lava worms from Dragonforge Legacy』

"I see... that's, how should I put it... a problem. So this so-called monster realm is extremely dangerous? If it's a fusion of all those chaotic supernatural realms where monsters exist, then it must be absolute chaos... But what about Miasma?"

Dane asked, and the answer he got was straightforward. 

『Miasma is the energy of corruption; it is a dark and unholy power that fills the entirety of the Monster Realm, created from the fusion of countless supernatural worlds. Unlike Astrum, it's wild and unstable; think of it as pollution but if pollution was an energy, wherever Miasma is, it means the place is filled with Monsters』

"Ohhh, that's interesting, but why so?"

『Well, it is really simple; for monsters, Miasma is a natural source of power and a lifeline; all monsters, regardless of species, can weaponize Miasma in various ways. For humans or any other race apart from the monster kind, Miasma is an extremely toxic thing. Prolonged exposure can weaken the body, cloud the mind, drive an individual insane, and eventually change a person into something... less human, turning them into something called a hollow, which is a mindless monster of an outside mutated species that can no longer tell the difference between friend or foe』

"Yikes... now I am thankful for this crib, although this just came to show how dangerous Priscilla is!"

Dane said to himself, realizing just how messed up the world was, or rather how messed up his starting point was.

And the System just confirmed his worries by saying.

『You should be more than thankful for your current situation; your lucky dragon milk purges all external afflictions; if it wasn't for Rakasha's breast milk, this vessel would have mutated into a hollow; but don't feel bad about your weakness; a human body isn't built to handle direct and prolong Miasma exposure, but thanks to the Crimson Shard crib, you're slowly adapting. In time, you may not just resist it; you might even be able to use it』

"Ha... use it... like, using Miasma like how the Monster Kind can. Is that really possible, well, for a human at least?"

『Affirmative. To be honest, currently speaking, the subject, Priscilla Heartbreak, is using you as an experiment. As expected from a tsundere type, she understands that a human child wouldn't last long in the monster realm without extreme measures. But since humans were never meant to exist here in the first place, there's no logical way for one to truly adapt』

Said the System, causing Dane to open his eyes in surprise, but he did not have time to inquire, as the System began to explain what Priscilla was currently doing to him.

『Sure, there are temporary methods to keep a human alive in this world, but how long would they last? Priscilla knew from the start that Rakasha didn't think that far ahead. And she also knows that if you were to die, Rakasha would be sad. But that aside, she is the kind of person who enjoys tackling problems no one else would even consider solving』

『So even as we speak, she is doing what only she could do... the day they decide to keep you, she created a brand-new spell on the spot. It doesn't have a name as of yet, but the crib you are lying in is directly linked to Priscilla's Astrum Sea. She has no guarantee her newly made magic will succeed, yet for the past two days, she has been burning through an enormous amount of Astrum, using her probability magic to force the outcome in your favor... but this type of advanced magic is extremely draining, especially in her current weaken form』

Explained the System, causing Dane to reply as such.

"Wait...wait.. you mean this entire time, Priscilla is going through all that for me. Well, isn't that a surprise?"

『Affirmative! To put it simply, she is trying to push your body through millions of years of evolution, reshaping you so that a human can survive in the monster realm without any outside help. A permanent solution to an unsolvable problem』

"I see, damn, she really is a Tsundere, ha?"

『That she is indeed』

"Hmm, is there any way I can help her?"

『Realistically speaking, no, there is nothing you can do here... I would advise you to just let her do her thing』

"Sigh... curse this childlike body, but you are right... well, either way, System, I am feeling kind of tired, cons of being a baby, I guess... I am saying goodnight, System...

With those words said... Dane closed his eyes, and the last word he heard from the system was.

『Goodnight Host!』