Apocalypse Chat Group: Conquering the Heroines

Tatsuki opened the group album.

The first thing he saw was a selfie of March 7th.

If he remembered correctly, March 7th was someone who loved taking pictures.

The photo was quite stunning.

Without much thought, he saved it.

Returning to the group chat interface, an idea came to mind, and he glanced at his own information.

[Human]: Tatsuki Hayashi

[Points]: 3700

He had accumulated 3700 points after taking down over 3000 zombies today.

It was enough to take a spin on the roulette.

Opening the roulette feature, he saw a variety of potential rewards:

Abilities: Sea Tiger Explosive Punch, Friendship Breaker Punch, Sharingan, Fire Magic, Mystic Eyes of Death Perception, and more.

Items: Death Note, If Phone Booth, Pokeballs, Holy Swords, and many others.

The abilities were categorized by level: C, B, A, S, SS, and SSS.

Previously, he had drawn two B-level abilities: Physical Enhancement and Lightning Dharma - Yin Lightning.

"Let's hope for something high-level this time!"

With excitement, he started the roulette.

Each spin cost 1000 apocalypse points.

The roulette spun, the pointer passing over various abilities and items: Mystic Eyes of Death Perception, Dragon Slayer Magic, Shrink-Enlarge Lamp…

Under Tatsuki's watchful gaze, the roulette finally stopped on a narrow slice.

[Congratulations! You have obtained the S-level ability: Gemstone - Vector Manipulation!]

"???"

This was a jackpot!

For a moment, he was ecstatic. Then, he quickly calmed himself.

He recognized Vector Manipulation, an ability from A Certain Magical Index.

In that series, Academy City's strongest esper, Accelerator, was known for possessing this ability.

However, Vector Manipulation didn't equate to being Accelerator.

Accelerator was exceptionally powerful due to his immense computational capacity. Even without fully understanding the essence of the ability, he wielded it with unmatched strength.

While many in Academy City had vector manipulation, only Accelerator was at the top.

Before his brain injury, Accelerator's computational ability was at the level of a particle computer.

Tatsuki checked the ability's details.

[S-level Gemstone - Vector Manipulation]: Upon fusion, awaken the Gemstone ability to manipulate vectors.

"Gemstone!!!"

Tatsuki's eyes widened.

If it had simply been vector manipulation, he might've felt slightly underwhelmed, as he didn't believe his computational abilities were that strong.

But if it was a Gemstone, that changed everything!

In A Certain Magical Index, Gemstones were espers born with innate abilities, making them vastly different from those artificially created in Academy City.

This opened up a realm of possibilities for Tatsuki.

Espers who are born with Personal Reality are known as natural ability users, or Gemstones.

Nearly 99% of the abilities in Academy City, including Accelerator's, are artificially developed Personal Realities.

The strength of these artificial abilities depends on computational capacity.

However, Gemstone abilities are different.

Unlike artificial espers, Gemstone users can activate their abilities instinctively, without calculations.

Their power flows naturally, like moving a limb.

To illustrate:

If Accelerator wants to change the direction of a force, he needs to calculate to make it happen.

But with Gemstone-based Vector Manipulation, a simple thought like "I want to change this" is enough—it's as if the force moves by intuition.

Excited, Tatsuki snapped a screenshot of his new ability.

He then fused with Vector Manipulation and used 1000 points to upgrade it to level 2.

Afterward, he shared the screenshot in the group chat.

Tatsuki: "I just drew a new ability: [Image]."

March 7th: "What?! Tatsuki, how do you have so many points to use the roulette? It's 1000 points each spin, and we only get a few dozen from check-ins!"

Tatsuki: "Aside from check-ins, apocalypse points can also be earned by interacting with or reducing apocalyptic factors."

Tatsuki: "In my world, there are entities called evil spirits, which are considered apocalyptic factors. Killing them grants apocalypse points."

Tatsuki: "And today, I encountered the Apocalypse Game. Killing zombies in it also gave me points."

March 7th: "I see… But I don't even know what the apocalypse is in my world!"

Exusiai: "Could it be Oripathy for me?"

Aqua: "Hmph! For me, it must be defeating the Demon King's army and the Demon King!"

Saeko Busujima: "I'm not sure what the apocalypse is in my world either."

Tatsuki: "@Saeko Busujima, it might be zombies on your end, but I can't say for certain."

Saeko Busujima: "Oh? If it's zombies, I'll need to make some preparations. Thank you, Tatsuki-kun."

She didn't doubt Tatsuki's words, even though he had admitted he wasn't sure.

March 7th: "Ugh, so frustrating! @Tatsuki, what does this S-level ability of yours even do?"

Tatsuki: "The name says it all—Vector Manipulation."

March 7th: "Vector Manipulation? I don't get it!"

Exusiai: "Hehe, I don't really get it either."

Aqua: "Hmph, a random ability. It's not as good as my divine powers!"

Tatsuki: "…"

Saeko Busujima: "…"

Seriously, there are three fools in this group now!

...

200 power stones = 1 extra chapter

300 power stones = 2 extra chapter