God of Time System: Harem in the Zombie Apocalypse

"Huh?" I looked at the [Sell] section of the Shop and, well…

[Would you like to sell Lesser E-Grade Zombie Core for 0 Cronas?]

[Yes/No]

Well… it wasn't exactly like this before or more like when I started selling them, they were sold for 20 Cronas each but as I started selling more of them, their selling cost reduced and by the time I reached 100, this message appeared.

Though there was one thing that I didn't get…

"Rhea, why is it that Lesser E-Grade Cores sell for less Cronas than used ones?" I looked at her with a questioning look.

As far as I remember, the used ones were sold for 25 Cronas while the unused ones filled with energy were sold for 20 only. Even the E-Grade ones were being sold at 40 Cronas than used E-Grade Cores, which were at 50 Cronas.

"That's because of the Cessation Energy. Think about it, if there is a decay energy that is eating every life force and there is a device that stores that energy, would you take the empty device or the already filled one?" Rhea asked, and it made me ponder a little.

"So Cessation Energy is bad, huh?" I spoke as that kinda made sense, at which Rhea nodded. I nodded at her before another thing came into my mind.

[Gene Evolution

Allows the user to evolve beyond his current limits

Requirements:

E-Grade Cores: 0/200

D-Grade Cores: 0/50

C-Grade Core: 0/1]

'Hmmm… if it is like this then… Why is this quest asking for Zombie Cores… wait!' my eyes opened up in realization as I looked at the System message more properly.

'There is no mention of 'Zombie' Cores… does that mean,' thinking that I turned to Rhea as I asked,"other than Zombie Cores… are there any other forms of Cores?"

Rhea looked at me with an odd expression before she changed the direction of her gaze to somewhere within the shop and following her gaze, I saw another section that was beside the Dungeons' section that I missed… again this time.

I peeked at Rhea for a few moments with an awkward smile before thanking her and moving towards that section.

[Cores]

'Ah! There was something like that too,' I thought as I recalled there was a section for this too. Though because it didn't look appealing enough, I didn't paid much attention to it.

'Now, what does it have to offer?'

[E-Grade Chronokeeper Core

Cost: 2000 Cronas + 2 x Used E-Grade Core ]

[D-Grade Chronokeeper Core

Cost: 10000 Cronas + 2 x Used D-Grade Core]

[C-Grade Chronokeeper Core

Cost: 50000 Cronas + 2 x Used C-Grade Core]

[B-Grade Chronokeeper Core

Cost: 250,000 Cronas + 2 x Used B-Grade Core]

[A-Grade Chronokeeper Core

Cost: 1,000,000 Cronas + Used S-Grade Core]

[S-Grade Chronokeeper Core

Cost: 10 x Used S-Grade Core + Heart of a Higher Time Being]

I looked at those absurd demands and just kept blinking my eyes at it for the next few moments.

"Hmmm… Heart of a Higher Time Being? What's that?" I questioned as I looked at the last one's price before I turned at Rhea, though she just looked at me before she turned her gaze away from me.

I then looked at the amount of Zombie Cores I had

[E-Grade Cores: 12400]

[Lesser E-Grade Cores: 16900]

The first thing I need to do is to make someone use these Cores and then use the used Cores to buy a few Chronokeeper Cores. I wonder if the mechanism of using the Core is similar to using the Zombie Cores? Hmmm… I wonder if it will make me powerful as well…

Now then,

[Total Cronas: 10029 Cronas]

'Let's buy that dungeon as well,' I thought before moving to the dungeon section.

[Dungeon Of Libra (Rare Dungeon)]

[One of the Common Dungeons, which was upgraded twice after higher energy beings visited the area.

Original Cost: 1,000,000 Cronas

Notice: Because the user has achieved beyond SSSS Grade, the price of the dungeon has been reduced by 80%

Notice: Because the user has used a Golden Key, the price of the dungeon has been reduced by 50%

Notice: Because it was the user's first dungeon, the price has been reduced by 90%

Renewed Cost: 10,000 Cronas]

Pressing the [Buy] button on the screen, I bought the dungeon and immediately all 10,000 Cronas vanished from my pocket and after a while…. Nothing happened.

"Here," Rhea spoke as she walked back to my room and I followed behind her.

"Now that you have a dungeon under your control, you should be able to become a Dungeon Lord," she spoke as I entered the room.

Inside my room, where I usually spawn when I enter the [Second Space], there was a new screen present in the corner with a door that looked really old-fashioned, to be honest.

"Different dungeons come with different perks. Let's see what this one comes with," she spoke as she looked at me walking towards the screen.

[Dungeon of Libra (Rare)]

[Owner: Michael Aroa

Location: Black Water City(E*rth): Erastale(Forgotten Demon Dimension)

Total Number of Floors: 70

Total Number of Workers: 0/5

Current Efficiency: 10%

Dungeon Functions*

Dungeon Options*

Dungeon Intel*]

This was the first screen that came in front of me and I looked at Rhea, turning at me with a shocked expression.

"What?" I questioned with a bit of curiosity before she muttered,"nothing… just that the location… it's rare to see that name."

Her words piqued my curiosity, but I decided to check the screen first.

[Dungeon Functions]

[Save Point!]

[Allows the user to set 2 return portals: One at the center of the dungeon and another one anywhere within 10 kilometers of the dungeon.

Limitations: Once set, the point can be only reset after 3 months]

[Map of the City!]

[Have the map of 10 kilometers in radius around the dungeon unlocked!]

[Crona Generator!]

[Generates Cronas based on the workers present in the dungeon. Explore [Dungeon Options] to find out more about this]

[Summon Creatures!]

[Creatures that you have bought within the dungeon can be called for a limited time in the outer world.

Time before the creatures vanish: 10 minutes]

[Dungeon Lord's Domain (Passive)!]

[Within 10 kilometers of the dungeon, the user's strength will increase by 50%]

[Lord's Army!]

[Within 5 kilometers of the dungeon, anyone under the user will have their strength increased by 20%. Their regeneration power increases by 30%]

After becoming powerful one after another on the same day, I kind of got used to all these power ups. Though [Summon Creatures!] and [Crona Generator] did pique my interest a little.

"You got some really good effects, huh?" Rhea, on the other hand, was surprised as she observed those options.

"Really?" I questioned with a bit of an odd expression and she nodded before explaining,

"Normal dungeons don't have the last 2 options while the [Map of the City] is merely limited to 2 kilometers. There are also 2 reset points instead of one. I guess it must be because of that Rare Grading. Well, good job out there champ."

"Do I get a kiss or something?" I spoke with a mischievous smile as I tried teasing her a little, but…

"You want one?" she smiled back at me with the similar mischievous smile as she looked at me. Though my instincts screamed NOT to say 'Yes' here or else I… I don't know what will happen, but it won't be a nice outcome.

I smiled at her before speaking,"Thank you, Teacher. Only the sentiment is enough" and moving to the next section,

"Tch!" I saw her click her tongue with a bit of an annoyed gaze and I felt a sort of relief, as if I had dodged a big bullet here. Now on to the other options on the screen

[Dungeon Options]

[Dungeon Shop*]

[Dungeon Upgrade*]

[Dungeon Enchantments*]

[Dungeon Modifications*]

[Dungeon Manager*]