We're back home from the guild, and we're going to get some air back home for the first time in days.

I'll check the security devices as well, but there's nothing particularly wrong with them, and fortunately no intruders seem to be there.

However, is it my fault that Hulka and Yuki had the look of 'I'm a little sorry I couldn't experiment'?

After that, I haven't eaten at home in a long time, neat at tea time after meals.

"Do you plan on doing something this afternoon?

"Working isn't a time slot, and shall we garden today? It's spring, and because of it, my home, I want to make it beautiful."

"Agreed! It's a huge garden!

Natsuki immediately agrees with Hulka's proposal.

It's certainly spring at times, and it's blooming season.

The garden bud Stump is starting to swell, and I might be able to see some flowers in a little while. Only in the first spring, I don't know what kind of flowers will bloom.

"But if you think about planting, it's more of a home garden than gardening."

"Sure. Especially corn."

What you have is corn, vegetable seeds, and herbal seeds.

Regardless of vegetable and herbs, corn is a complete crop. Not the kind of plant that enjoys flowers.

"I'm not very interested in gardening, but I'm pretty interested in home gardens, right?

"Speaking of which, I remember hearing that corn requires a lot of fertilizer..."

"Really?

"But before that, the soil in this garden, it's not very fat, is it?

Yuki tells me that, and I see the ground in the garden.

The places we usually use in our training are trampled and grass is gone, but elsewhere the grass usually grows, so it will grow.

However, it's a different matter of whether it's suitable as a field, and from my amateur eyes, it doesn't look like very good dirt.

I think black soil is good soil for my image, but this one looks more brown, right? It just feels better when compared to the school grand or the soil around it.

"Right...... if you don't put fertilizer in the long run, the land will lose weight, right? I think there was a composting magic trick..."

"Is it even on that stuff? In the Alchemy Dictionary."

"Oh, the garbage disposal problem, that's pretty important, isn't it? Leaving trash alone in the city or something can cause rats and bugs, and can be the source of the plague. If you think about it, don't you think there's a demand for magic props that can be handled beautifully?

"... when they say that. Right? The toilet is a magic trick, and it plays an important role in hygiene."

It was a little unexpected, just for the so despicable demonic props, but even our bathroom was a fine demonic prop.

Is it just a compost, just a compost?

"But it's not an incineration process, like a toilet, it's a garbage can that composts?

"Wait a minute. Erm..."

Hulka, who brought the alchemy dictionary, snorts after a while of research.

"I have both, but it sounds more like a compost to me"

"Why?

"Amount first. Amount of stuff to leave in the toilet and amount of other trash. That's usually more of the latter, isn't it? Attempting to completely incinerate this seems costly because of the high consumption of demonic stones"

In this world, the amount of debris emitted is obviously less than in Japan, but still more than the amount people put out in the toilet. It would be hard to consume and incinerate all those demon stone magic.

"Next, use it effectively. The garbage that comes out here is basically all compostable stuff, so it can be sold to farmers more to add to the cost of demon stones, and consume less demon stones than incinerate them, which is worth a fortune. The downside is that it's bigger than the trash cans you incinerate, but isn't it big enough to be a problem?

"Surely there's a bit more raw garbage."

Since there is no such thing as a plastic package, the amount of garbage itself is small, but there is clearly more to dispose of than in Japan with regard to some ingredients.

It is not necessary to say why, because there are many parts to be handled at home.

It's not like a modern supermarket where it's completely down-treated and you can cook without a knife if you want.

"That's convenient. Fertilizer, don't you have to buy it? We're going to have a lot of waste from demon demolitions, and we're going to be able to make as much compost as we want."

"Oh, don't leave in tons, all sorts of things.... With this, it would be easier to process Skull Ape, too?

Because of the number of appearances at a time, it's a pain in the ass to bury them in plain sight, that's all.

"No, that's exactly what size stuff can throw in a bunch of Skull Ape bodies...... Besides, if you're throwing the whole thing in instead of fine garbage, it's gonna be a pretty vicious substitute, right? Compost with shredding, if you put it plainly"

"... Ugh"

I imagined it.

Surely it is vicious.

"But if the bones are also ground and composted, it may be good as an ingredient. Because it contains phosphorus."

"Speaking of which, you're gonna sow bone powder or something."

"I see. Is it reasonable, in a way, to compost the whole thing"

I also know that the three elements of fertilizer are nitrogen, phosphoric acid and calcium.

I don't know anything else.

"Phosphorus is good for that, what about the other fertilizers?

"It's an easy thing to get, potassium is grass wood ash... that's grass wood burning ash. There are ways to plant beans for nitrogen content, but there is a lot of nitrogen in the oil shavings, so you might be able to use vegetable seeds just fine. Especially if you add compost, you need a lot of nitrogen."

"You familiar with that, Nutski?

"Yeah, well, what about some?

Somewhat, is it?

If you're someone who does gardening, do you know and deserve to know?

Well, I don't really understand, so I just obey.

"Shall we split up and work on it? Toya plows, Nao builds blocks and widens the area a little bit more, Natsuki plants and me and Yuki make compost, so what do you say?

"I'm not sure, and if you specify a location, we'll do it?

"Right. Instructions, Regards"

As Hulka suggests, we split up and start working.

Making the right blocks of stone is easier than making a bath. Instead, it's more annoying to get the ground done and arrange it nicely.

But that was also until I realized that it would be good to raise the ground directly with soil manipulation "Grand Control" and turn it into stone. It is immobilized and immobilized with gassilli and is perfect as a curb because it makes it stone to the part buried on the ground.

After you finish building the curb, help Toya plow it, help the nuts sow it. Then treat garden trees and unwanted shrubs and drain grass, etc.

By the time I finished sprinkling water at the end of the day, the sun was only tilting.

◇ ◇ ◇

"Good luck to all three"

Yuki and Hulka also came into the dining room with drinks as we 'purified' Natsuki and took a breather in the dining room.

"Oh, I'm pretty tired. After all, farming is not your usual training!

"It's quite large, this garden"

"What about the Hulkas?

"We're done, too. I was working on it, you were watching it, right?

"Oh. I saw you were, but you were finished"

"Right, because of that, shall we go see? And I need an explanation."

Led by Hulka and Yuki, it was just outside the back entrance in the kitchen.

The compost made there was bigger than I expected.

It is about 150 cm high, a rectangle about 1 metre deep and 2 metres wide, with a jump-up lid at the top. They have a small door at the bottom and the finished compost can be removed from here.

"Pretty big, huh?

Proudly, Yuki stretches her chest as she slaps Bashibashi and his box.

"For business use… even sizes used in large restaurants. Shredder's here, so we can handle the bones."

"It can only be treated for about 500 kilos at a time, and when you throw it inside, close the lid, and when you press the button, the process begins. Looks like the process will be over in about a half to a day. It's dangerous, so don't go in there, okay?

Easily explain how to use it while Hulka opens the lid or indicates a button.

There will be no need to be cautious. There's no way I'm going into this stuff.

"I won't! Oh, seriously, can you handle Skull Ape, too?

"I might be able to go about half the time, but that's because about 10 of them come out at a time."

"But why don't we just put a key on the lid? I think it's unlikely that a child will come to this house, but it could be just in case."

"Oh, yeah. Is it possible that the child would go in for fun? I've lost track of that. I'll follow you later."

To my point, Hulka gets a hazy look and snorts.

Kids don't know what to do.

In terms of danger, the security equipment installed in the house is also vicious enough, but for once it seems non-lethal, so it would be safer than this compost, which is sure to die. - Well, they're really only 'once'.

"By the way, one Goblin Demon Stone can handle about a ton."

"Is that... cheap? Is it expensive?

"I remember hearing that it was something before and that the cost of garbage disposal was about 40 yen per kilo. I remember."

"40 yen..."

Garbage bags paid for in my area, but given the price of a bag, it seemed a little more expensive than that...? Well, it's a little hard to compare because of the weight.

"Goblin's demon stone was 250 rare, right?

"If you're selling to the guild. I think it would be more expensive to buy."

"Oh well. Assuming that it is twice 500 rare, per kilo, 0.5 rare...... That's cheap."

"But Natsuki's 40 yen includes all kinds of garbage, right? If it's just so-called raw garbage, wouldn't the cost be cheaper?

"... it's true that there's some troublesome garbage to be disposed of, that it's Japan"

It sounds good when it comes to 'recycling' but some recycling is almost certainly pointless.

Food trays, for example. Detergents and water to wash dirty trays with food, the cost of purifying their water, the installation, collection and transport of collection boxes to recycling plants.

Given the weight and volume of the tray, isn't it possible that just the fuel used for transportation outweighs the oil used for the tray?

"Surely, sometimes, you do things that are pointless, don't you? Collect pull tabs or pet bottle caps…"

I guess it used to mean because pull tabs are off the can and it's dangerous when you can throw them away, but currently, such cans rarely exist.

Nevertheless, I don't know what it means because I purposefully take it away and collect it. If you want to collect pull tabs, tell them to collect the aluminum cans themselves. In fact, because the pull tabs I collect are also only worth it as aluminum.

Incidentally, there is also recycling in this world, the subject of which is metals and glass. Because it is usually worth it, there is no such thing as a strange collection system, and if you bring it into the store, you can buy it as a resource.

The rest is disposed of because it is ceramic to it, such as raw debris, trees, etc., so it is buried, baked, and compost used.

Very ecological, in a way.

"But you don't have to worry about Demon Stone about this. I'm modifying it a little, so I can use my own magic, so the running costs are zero!

"That's amazing! You're also kind to your wallet!

Yuki insists so while banging the compost again, and Hulka rides on it.

"Finally, it also features an overload feature! More magic can also reduce processing time!

"Convenient! But expensive, isn't it?

"No, now what! Delivered at material cost only!

"Well, beautiful!

"What, this little play..."

Me and Toya flaunt Yuki and Hulka's little play, which suddenly began, and Natsuki gives water while smiling bitterly.

"Isn't that material cost a problem? Initial cost - how much did it cost to make it?

………

To Natsuki's words, Haruka and Yuki, all aligned and silent.

I see, there was a cost there.

"Even if the running costs are almost zero, does it not necessarily mean the total processing costs are low"

"But if you use it a lot, you just use it, and the amortization of the initial cost will be distributed, so it won't be that high a cost...... right?

"Ugh, yeah, well, that far?

"There's no labor cost, so there's no problem level...... right? Yeah."

Yuki and Hulka answering that while I strayed my gaze...... I guess it took me quite a while.

I don't think it would be a good idea because it would level up alchemy and I don't even have trouble with gold.

I didn't think it was a big problem for Natsuki or Toya, and even though I laughed bitterly, I didn't particularly pursue it, and the story was over.