The World Tamer Harem System: The Omniverse Will Be My Harem

After getting everything settled with the firework shopkeeper, Yiggrit went back to his house, and sat down in his room, with Voulge on the ground next to him unwrapped.

"How great… I have everything ready for the night, and after that, I will be able to live my way more comfortably. There's not too much time to be me, when I have an important goal in mind." He sighed as he sat on the geo with his arms crossed, a conflicted look on his face as he reflected on his own words.

There was not much time or right to indulge when he was so busy getting stronger. However now that there was not much else he could do, it was time to relax.

"Hehehe, After this I'll be able to start indulging in some harem collecting, even if I was not a pervert trained in the way of lust by my master, the system requires it, but the question stands, how far am I willing to go? Do I stick to a few but very close girls, do I get only enough for the system to let me grow?" He asked himself as he sat there thinking and uncrossing his arms to lightly tap his cheek.

However, his mind came to a different conclusion.

"Hell nah! What kind of little bitch do I look like restraining myself?! I'm a greedy selfish man, the greediest of them all, and I'll have all of them. I have enough love, and lust for infinite women and more. That's the kind of man the one who will stand at the very top of all verses, and master all things should be! That's who I will become. How nice it is to be decisive. Hahahaha!" He smiled widely before bursting into laughter as he complimented himself.

There was no doubt in his mind about the type of person he was, how he wanted to live, his goals, and even how big his harem would end up.

He did not fear such things or worry anymore, after all, these were questions a dreamer of fiction like he spent his years on earth daydreaming about instead of paying attention in class, what a bad student he truly was.

"Plus, I have to beat this challenge and beat the creator of the original technique… That bastard is going to regret giving me this chance to grow. I'm a World Tamer now, so let's tame the entire world. The Harem Tryrant route it is." Yiggrit nodded to himself with a devious smile on his face.

If only anyone would have known that a monster was being born from the decisions of this young man, maybe something might've stopped him, but unfortunately, there didn't seem to be such a good ending in sight.

"Ok, so I have the fireworks and 4 WTP… Hmmm, I don't know how valuable these are yet, that's why I don't want to waste them, but they will mean nothing if I'm dead, so let's be extra prepared… Kara, you'll have to get me something." Yiggrit smiled as he called upon her.

As usual, Karasi responded and from there he made another purchase, after he believed in being safe, not sorry.

...

...

...

"Now, with a trump card secured and my WTP emptied, Voulge, you have your mind, but you can't talk…" He grabs his demonic scythe and pets it gently, and it shakes as he does so, clearly enjoying its master's touch.

However, as expected there isn't a response.

"Hmmm, Kara, will Voulge just stay in this state?" Yiggrit asked as he kept caressing his weapon.

[No. As a sentient growth weapon, it is fully capable of developing high-level intellect if its rank rises enough. The higher-ranked it is, the more competent it will become aside from growing stronger and such other perks of leveling up and ranking up.] Karasi responded calmly.

"I see… Now, about a more general overview, how much information can you give me? Can I ask you anything?" Getting a response caused Yiggrit to wonder.

[No. You have access to knowledge about your rank, and I only have a complete understanding of matters regarding or connected to the system or just the most basic bare minimum of the world. Thus, I can't provide in-depth explanations about the state of any world, its characters, plot, and otherwise. In this regard I only know as much as the challenger.] Karasi explained.

"What a pity… I can't use you to metagame… I was counting on you to make me a GM/DM, but I guess I'll just have to be a player…" Yiggrit sighed in disappointment, and while his memory was great, and now even better with the enhancements he gets from his Heavenly Body, and his Demon Bloodline, it was still far from perfect.

Not to mention scenarios he didn't fully understand or stories he didn't finish or even start. There were so many stories and so many verses, and he had no idea where he would end up next, it was not scary in a simple verse like Demon Slayer, but if he ended up in a dangerous place like a Soulsborne/Souls-like verse, or Warhammer40k, or SCPverse, a cultivation world, or even one of those crazy isekai worlds and such.

The possibilities were as infinite as the ever-expanding pool of stories.

"Still, this is good enough. Kara, keep an eye on my surroundings, I'm sure you can do so through my senses, especially my heavenly life sense. Plus, manage and activate my abilities, skills, and so on when necessary and I'm busy not doing that. You'll be my Ciel.

"I hope you make me as OP as the Damned slime… I mean, why does the guy like that cute if he's still gonna identify as a man, makes no sense! He's not even a femboy or a trap technically, since he has nothing between those legs! Truly the cruelty of fate." Yiggrit says half joking, and half serious, as he continues to pet Voulge.

[The function of management of ability sets, and usage, as well as surveillance, has been registered. I shall work to the best of my abilities to satisfy you, challenger. You can count on me!~( ๑ ˃̵ᴗ˂̵)و ♡ ] Karasi replied with maybe conviction. Whatever it was, it didn't feel as robotic as the other responses.

(Did she just emote? I'm seeing things right? Then again it's not uncommon for a system to be sentient, I should keep an out for that, and so long as she's not annoying and is useful, it works for me, I'm a lover of all women, after all… ignoring the rare exception… Ahem.) He thought to himself as he saw the message pop up and he heard her voice in his head.

"Satisfy me? To do that just manifest a body, and we can talk from there. It's not good for a man to have too much pent-up." Yiggrit nodded to his own words as if he were saying something insightful.

[Negative. That is currently outside the realm of possibility.] Karasi responded.

"Currently, you say... Good that sounds just like my kind of invitation, make sure to warn me when that's no longer the case." He responded before stretching his arms and legs, as he got into the crossed leg position.

[As you command, Challenger.]

After that, he immediately began focusing on training his Heavenly Body, what he did every day instead of sleeping, as it served well as a replacement, and his Demon Bloodline only made it easier as he didn't have to worry about sleeping now.

Even if he didn't cultivate the Heavenly Body, 2 hours of sleep would be more than enough for him.

(Time to try and push further than in my first life on earth. This new body is on a whole new level, back on earth it would have taken me 2 years, what I got in a day, then again, the chi here is so much denser it's not even funny, it's like going from a cup of water to the entire ocean of the earth. So unfair, but I'm the one taking advantage of it, thus it gets a pass.) Yiggrit reflects on the advantages of his new life, feeling almost sorry for his earth self.

He began gathering chi, accumulating and making the second layer of chi directly applied, creating that second dimension of chi layering.

Further consolidating and pushing himself, after a week of cultivation, to go where he never could in 2 years of his past life.

[Congratulations Challenger, you have gone from Heavenly Body Stage 1 Level 1, to Heavenly Body Stage 1 Level 2.]

[Due to your small accomplishment, you have earned 1 WT point.]

The notifications came in just as he was done consolidating his newly acquired power, and chi.

(With this my heavenly body is now 2 dimensional, just one more layer and it will be 3 dimensional… Even without the system, the levels, and the demon bloodline, that would have made me peak human condition…

(I wonder if the effectiveness increases or decreases because of this… I lean more towards increases since I feel leagues above before this breakthrough…) Yiggrit concluded as he got up and began testing his black goo-covered body again.

The impurities would soon be magically cleaned off his clothes as if they were never there, but his unclothed body was still covered in it.

"Another bath..." He sighed as he got ready, and went on to take a bath.

Once he was done, and came out of the bathroom, he was met with another visit.

Knock Knock

As someone was knocking on the door again.

"I've started to get visited a little too often already…" Yiggrit complained as he went to get his clothes and dressed up, and grabbed then wrapped up Voulge before heading to the door.

Knock Knock

"Yeah! I'll open just give me a second, you came at the wrong time." Having Voulge ready to behind his back as he opened the door, Yggrit smiled.

"Ah, so you were home… I was getting a little worried. If you weren't at such a late time." Tanjiro once again appeared on his doorstep with his kind smile on and an empty basket on his back like a backpack.

(Judging from the basket, it's tonight… Why did he stop by then? Is he going to ask to stay here instead of that old guy's house?) Yiggrit wondered.

"Oh, Tanjiro… Why are you here?" He asked bluntly.

"It seems I'm being bothersome, I was going to ask if I can stay here until the sun comes up since it would be hard to reach my house at this time, I guess I got a little too sidetracked here." Tanjiro rubbed the back of his head with his hand, with a mild smile, and a bit of a blush.

(This guy was probably busy helping a bunch of random people around the village, and lost track of time… is this why he was too late to return properly? It's hard to say for sure.) Yiggrit thought to himself as he listened to the boy.

"No, don't worry. I'll just help you get through this night. There's no need to waste time here, and let your mother and sisters alone, come on, Tanjiro. After your dad, you're the man of the house, you know." He said to the young man.

"….. You're right! What was I thinking? I shouldn't leave them and my brothers at home alone like this. Thank you for your words, Yiggrit, but I should be able to do it if I focus. I was already bothersome enough." Tanjiro nodded his head the words swaying his mind quickly.

"Enough, I said I'll go with you, so I'm going with you. Let's go." Giving him no time to argue, Yiggrit put Voulge on his back and then started walking after closing the door to his house, heading in the direction of the boy's house up in the mountains.

"Wait up! Ok, thank you for your help, Yiggrit. It's nice to see your kind side for myself." Tanjiro caught up with him, and they both made their way there.

The path was full of snow, and the darkness of the night did not help, it was very easy to miss a step or get lost, but Yiggrit moved forward with no doubt or problems at all, as Karasi could keep him walking in the same direction without deviation, his heavenly life sense, and his enchanted 5 senses which are also connected to her, all help him go forward without much of the typical worries.

Not to mention his Demon Bloodline allowed him to see as well at night as he could see at day. He didn't know if it was just because he was a half-demon, or if all demons could also see well during the day, but that didn't seem to be the case to him.

"So, you've always lived here in the mountains with your family?" Yiggrit makes conversation as they walk together.

"Yes, it has always been our home… But I imagine someone like you has been to more places?… So tell me, how's the outside world?" Tanjiro took this chance to ask genuinely curious.

"I've seen some of it. In big cities there are a lot, a lot more people, so many there's no way you would know everyone like here. There are also a lot of new inventions people keep making, like guns or trains.

"Guns are these weapons that shoot small metal pellets, they are very deadly, and trains are these big metal structures, people ride to get from one city to another, even across provinces in hours or maybe a few days at most. There's so much, I couldn't tell you everything even if I wanted to, the world is so vast, and there's always something new as well." Yiggrit responded telling the young man some of the marvels of the wider world.

"Those gun things sound dangerous, but trains?! Going from one city to another in hours?!! Traveling between provinces in days?! There's no way that's real, right?!" Tanjiro was in shock at the idea, after all, traveling between cities alone could take from days to months, much less something like going to another province.

It was simply too unbelievable that they managed to make it so quickly, it would be like if someone came to you, and time you that while you weren't looking someone invented teleportation in the modern world.

"I'm not one to lie, I'll show you a train someday. I bet you never even took a photo, such a country bumpkin." Yiggrit responded choosing to tease the boy a bit.

"… A photo?" Tanjiro didn't care much for the country bumpkin comment, but this other word intrigued him.

"It's like a painting, but you need no paint or pencil or any of that. You just need a device called a camera and you can make a photo within a day or so that looks exactly like the person perfectly." Yiggrit responded believing that at this period they probably still had to spend time revealing photos in a red room.

So it was not instantaneous like how it is in modern times.

"A day? Then it's not that impressive, right? At that point, why not just paint or draw them, it's much faster." Tanjiro was confused about the usefulness of such a thing.

"Because not everyone can paint or draw, but anyone with enough money can buy a camera, and they get a perfect painting of whatever they take a photo of." Yiggrit attempted to explain.

"…. I still don't get it, but you made it sound expensive which is confusing on why people would want that at all." Tanjiro who had never seen a picture, didn't think it could be so impressive, thus he found himself confused about them.

"When I show you a photo you'll get it," Yiggrit responded.

"I hope so. Though I don't know if you'll ever get the chance to show me all that, unless you bring it here, and I wouldn't want to trouble you like that." Tanjiro smiled appreciating the little conversation they had.

(I guess he's the type who isn't interested in seeing the world, even if he is curious about it. He probably would have never left this place if his family hadn't been murdered in the canon.

(Oh, well, this time I will change things, and I'll start my harem with your mother and your sisters, thank you for handing me this meal with open arms Tanjiro. Hahahaha.) Yiggrit thought to himself his more diabolical side coming out, as he did.

[Conditions have been met. You have received a quest.]

[Quest: Kamado Rescue.]

[Description: You are a lustful bastard, a closet pervert who yearns to have it all for himself, the kind of guy who is the natural enemy of both men and women, all because your lust for Women is insatiable, and you claim to have a love for all of them, then start putting actions to your words.

Objective: Save the whole Kamado Family.

Rewards: New System Function, 12 WTP]

(Hahaha, perfect… A new function? Already? You got me curious, I'll see what that's all about.) Yiggrit was happy to see the new mission pop in.

"It's no trouble at all, after all, what's a simple favor among friends and family, we have to stay united." Yiggrit said emphasizing 'family'.

In the end, Tanjiro had no idea his new friend, was aiming to become his step-father, and brother-in-law all at once.