The day after Lina and her friends left for the invasion.

'How are Lina and her friends?
I'm sure we're trying to work out a partnership in the areas we control in District C.

　With Lina's advice, the invasion members were confirming their cooperation in the control area of the nearby C district, not in the control area of the A district that they were originally to attack, the reason why they chose the C district was because they didn't want to alarm the Demon King, who controlled the A district that they were supposed to attack.

''Does it feel good?''
'Yes. Your only enemy is the Kobold, but you're winning without a hitch.
The invasion of District A begins tomorrow?
If all goes well, it will.

　As far as operating the smartphone and watching the subordinates, the cooperation is somewhat poor but I can say that things are going well. Tomorrow they will begin their invasion of District A as planned.


Oh. That's nice.

　The canon responds to my words with applause.

　Just a few minutes ago, we just returned in transition after eradicating the human race that invaded the Second Dominion Realm. The number of intruders in the First Dominion Realm has been zero since we defeated the heroes and their party. We'll be able to spend a few hours in peace.


What is it?
The intermediate and advanced treasure chest. Do you know them?
I've never seen it, but I know a lot about it.

　Intermediate Treasure Chests -- The maximum DP increases by 5 when installed. However, the contents must contain items of rank C or higher. Creation CP5.

　Advanced Treasure Chest--The maximum DP will increase by 10 when installed. However, the contents of the chest must contain items of rank B or higher. Creation CP10.

　The previous chests you've installed so far will only increase the maximum DP by 1, so the benefit will be greatly improved.

'For now, let's create from the [Intermediate Treasure Chest]

　I operate my smartphone and select [Intermediate Treasure Chest] from the [Creation] section.

　--?

　But no matter how many taps you make, you can't create.

'Hmm?　I hope you got enough CP.　Why can't you just create?
Huh?　There is a limit to the number of treasure chests that can be installed, so you'll have to remove the existing ones.

　Is the maximum number of treasure chest installations shared........ The current dominant realm has 5 levels. The maximum number of treasure chests that can be placed in both the first and second dominant realms is 22. If all the treasure chests were made into [advanced treasure chests], the maximum DP would be +440 at once. However........such a stupid choice is not allowed.

　Having the 【advanced treasure chest】 taken away by an intruder would lead to the presentation of a B-ranked item. Although I don't think there are any Lina-class intruders rumbling around, but if there were 12 intruders at that level, and they were all equipped with rank B items, not to mention my subordinates would be loosely placed, the possibility of me being killed would arise.

　I wouldn't even want to present them with a C-ranked item, let alone a B-ranked one....

'Are you worried about the ratio?　Then how about creating a [treasure house]?
[Treasury]?

　Well, it was a certain percentage that was troubling me, but I listened to the advice of the canon that slightly missed the point.

''Yes. If you create a treasure house, the maximum number of treasure chests you can set up will increase.

　Treasure Room -- A room that can hold 10 treasure chests. It cannot be placed at the far end of the control area. Creation CP 30.

'Can the 10 treasure chests that can be stored in this [treasure vault] be installed in a separate frame?
Yes, but the [Treasury] can only be located in one location in both the first and second dominion realms. But we can only set up one 【Treasure Vault】 in both the first and second dominion realms.

　So that means we can place a total of 64 treasure chests in the control realm....... If we make them all [Advanced Treasure Chests], we can strengthen the number of people limit, and if we sacrifice all of them, we can also place [Volcanoes] in the control area. I won't, though.

''Didn't I see other facilities that increased DPs?
If it's Creation B, then it's possible to create 【Restoration Fountain】, 【Transition Device】 and 【Return Device】.

　The Fountain of Recovery -- A fountain of magical water that gushes forth to heal your fatigue. However, 【Chaos】 cannot be used. Maximum DP +60. creation CP 30.

　Transmigration Device -- A device that allows you to move to different levels. You can only place it 2km away from the stairs that lead to the next level. Maximum DP + 30, Creativity CP 60.

　Returning Device--A device that allows you to move out of the controlled area. Maximum DP +30. creation CP60.

　The maximum number of Fountains of Recovery is 2. The maximum number of Transitions is 1 set. This upper limit is the same for both the First and Second Dominion Realms.

''Hm?　Can 【Transformer】 and 【Return Device】 be used in 【Chaos】?
I think I can do that.

　If we use the 【Transition Device】 well, me and my men can move smoothly to the invaders, but if we think about it the other way around, will the intruders be able to come here smoothly as well...?

　I would like to install them in the residential area to secure a means of transportation, but we don't want intruders to be able to easily enter the residential area.

　It's a cumbersome equipment.

''Don't you have a Demon King Advanced Pack or something........''
'What?　You're still at level 5, and you can't even expand your dominant domain.......you're an expert?!

　At my muttering, Kanon let out a somewhat displaced surprise.

''Different points of surprise, but is there?''
No.
Okay.

　I asked the question with a moment's anticipation, but the answer was merciless.

　Now, what shall we do?　The opposite idea?　Can we just list the equipment we need to consume DP first and then decide which equipment will increase the maximum DP to match?　You can tweak it with the treasure chest.

'Canon, calculate the CP needed for the residence.
Yes!

　Kanon replies in a good mood.

'Kanon?'
Yes?
Don't ever list useless things, okay?
And of course...
If you feel uncomfortable with any of the listed equipment, we'll pursue it thoroughly, okay?
Yes.

　The nail-biting to canon was over.

　I had to think about the equipment needed to defend the dominant domain.


　First of all, let's consider only the first dominant domain?

　What's absolutely necessary is the [Special Limit], right? With the current 12-man limit, the DP needed is 80; with 8 players, the DP consumed would be 500; with 4 players, it would be 1000; with 1 player, it would be 2000. The increase in DP consumed is too crazy. Other than that, I didn't mind since I didn't have a chance to get invaded, but should I consider limiting demons soon?　This one had a moderately high cost of 120 for 24, 750 for 16, 1500 for 8, and 5000 for 1.

　This isn't going to let me choose anything but 12 humans and 24 demons........

　Just selecting the two minimum restrictions, the DP to spend was 200?

　That's enough of the restrictions, now the equipment.

　Check out the extensive list of equipment displayed on your smartphone - buildings, objects, and traps in the field.

　Don't we have a model house or something....

　Well, first, let's decide on a theme. Is the easiest way to choose the equipment that matches the theme?

　The theme of the second dominant realm is Seeking!　Low-level intruder!　This is a place to make money, you know?' So ... the theme of the first dominant realm is - 'Welcome!　High-level intruder!　Why don't you aim even higher? I think I'll take the

　The risk jumps up, but if you think about surviving in the end it's important to have some combat experience with some strong guys, right?　We were able to repel the strongest intruder in Kanazawa... so we should be okay with this policy, right?

　I repeat the question to myself.

　Shall I set the annihilation rate at 75%? Since there aren't many high-level intruders, I'll take them down as much as possible to gain experience. Instead, I'll give a 10% chance of drawing a C-rank item to the surviving intruder.

　After researching on the internet, humanity tends to dislike dominant areas with many traps. The most disliked traps are.......poison related and acid related traps.

　Acid-related traps include 【Acid Injection】 and 【Acid Swamp】, both of which are traps that will degrade or damage the metal equipment of the intruder.

　The major trap, 【Pithole】, is easily detected, so I was able to know after researching that it is meaningless.

　The color of the ground is blatantly different........ [Pitfall] is definitely a design error.

　Other than that, [Darkness] and [Revolving Floor] were also found to be unpopular. However, in 【Darkness】, the visibility of the subordinates also becomes zero, and 【Rotating Floor】 was an unpopular trap, even from my standpoint as the Demon King, since the subordinates would be trapped as well.

　Traps are trapped by their subordinates as well, that's the drawback....... How many times have I witnessed a ghoul caught in the 【Traversal Scissors】. When I saw a ghoul playing on the 【Rotating Floor】, I felt the urge to kill it.

　Traps are hard to do........

　 The only thing I can think of to do is to use Ghouls and Giant Bats, a cost-effective combination that will allow me to defeat 2 or 3 of them. The contents of the treasure chest are up to D-rank and below.

　From the second level, I'll be adding more poison-related traps. A combination of ghouls and giant bats, plus a goblin archer and kobold knight. Poison swamps and long-range attacks with bows and arrows go hand in hand, don't they? You'll also need an object to take advantage of the bow and arrow attack. I'll need to stock up on C-ranked items with a lottery rate of 5% (which I control) in the treasure chest.

　From the third level, I'll do my best to fight them off. An acid trap + a combination of ghouls and werewolves that don't require equipment. I'd also like to use the [Transfer Device] to connect the first and third levels. The destination is the 3rd level with a 0% survival rate. Sounds fun. If they survived, I'd give them a C-ranked item without fail.

　The fourth level should be a trap hell. After we get past the trap hell, all of my subordinates, including me, will be fighting off the deaths. Frankly, I don't want them to make it to the fourth level.

　The fifth level is the living quarters. If the humans make it this far, I'll just abandon the first level of control and retreat to the second. Incidentally, we should also install a [Return Device] for the movement of the household.

　Alright, we have some kind of a plan.

　Based on the plan, I'll draw out the necessary equipment and calculate the DP to be secured. Later on, I'll add the DP needed for the residential area from the canon, decide on the number of 【Resting Place】, 【P treasure chest】, 【Intermediate Treasure Chest】, 【Higher Treasure Chest】, 【Treasure Chest】, 【Treasure Cabinet】, and 【Fountain of Recovery】, and then we'll have a new dominant area to complete.


　◆


　Six hours later.

　After an argument with Kanon, the renewal of the dominion realm was completed.

Demon King Theon's Dominion Realm.

　DP: 1110/1119

　Area of control 12 km2

　Population 0

　Type Dungeons

　Level 5

　Eukaryotic 2

　Installed facilities Entrance*2
　Stairs*8
　Transfer device*2
　Feedback device*2
　Resting place*12
　Fountain of Recovery*2
　Treasure trove*2
　Treasure Chest*59
　Intermediate Treasure Chest*4
　Advanced Treasure Chest*1
　Grasslands (hierarchy)*1
　Forest (partial) *1
　River*1
　Lake*1
　Cave (small)*4
　Field: 50
　House *1
　Shed*100
　Small room*80
　Grave*20
　Rock*20
　Ruins*4

　Iron arrow*50
　Poisonous arrows*10
　Poison Swamp*3
　Acid Injection*10
　Acid Swamp*5
　Manure pits*2
　Alarm*1

　Special limit 12 people*2
　Demon limit 24*2

　Special Effect: Darkness Enhancement (Tier) *1