Multiversal Friendship System

(TL Notes: Haven't watched Mondaiji, so help me if you spot something.)

...

Shiroyasha's words made Souta pause.

Had she really asked Black Rabbit to attack the phone with the "Simulated Divinity: Vasavi Shakti"?

That spear wasn't just any weapon. In the battle against the "Last Embryo", it had taken down the Dragon King himself.

It had an absurdly powerful ability: adjusting its output to match the enemy's strength—releasing exactly the amount of divine lightning needed to defeat the target.

Of course, whether it was truly limitless in power was unclear.

Despite its reputation for being able to "annihilate galaxies", it was still blocked in the Box Garden (Hakoniwa) by the simple "Invulnerable to Swords and Spears" gift.

What concerned Souta more was…

Just how indestructible was the system phone?

If Vasavi Shakti couldn't damage it, did that mean this thing had absolute durability?

Souta looked at his phone, muttering to himself:

"Why couldn't you have turned into a sword instead…"

Shiroyasha: "This is the first time I've seen something so sturdy. And after stepping into the 'Boundary Gate,' I moved at the Sixth Cosmic Velocity—the highest recorded speed in Hakoniwa. Even then, this phone caught up with me. I'm not just amazed, I'm actually a little scared."

Rin Tohsaka: "Huh? Sixth Cosmic Velocity? You're joking, right? You'd need to know the mass of the universe to calculate that!"

Souta blinked in mild surprise.

Rin Tohsaka, a mage, actually knew physics?

So, she really did pay attention in school.

But…

Girl, do you even realize that the physics in your world are dictated by a Holy Lance?

Newton would be rolling in his grave if he found out.

Souta: "Shiroyasha is referring to Hakoniwa's version of the Sixth Cosmic Velocity. It's just a term—it essentially means moving faster than the speed of light."

Rin Tohsaka: "Wait, faster than light!? Are you serious!?"

She was starting to feel like she had stumbled into something way beyond her understanding.

Souta: "No need to be so shocked. The system already told you we come from different worlds, right? Shiroyasha's world is a divine realm filled with gods and buddhas—a literal Pantheon created by divine beings. So, it's not that surprising."

Rin Tohsaka: "A real divine realm? …That actually sounds kind of cool."

Souta: "Wanna see it? If you're interested, I can come pick you up and take you there."

Rin Tohsaka: "Tempting. But let's talk after the Holy Grail War is over."

Shiroyasha: "@Souta, you seem to know a lot about our world."

Souta: "You should've read the system announcement by now, right? As it explained, I have access to a lot of information about different worlds—including yours."

Shiroyasha: "I read it, but it's still hard to believe."

Shiroyasha: "That said, if this phone could keep up with me—even surpassing Hakoniwa's speed limits—then I have no choice but to believe this 'system' exists."

Souta: "I appreciate how quickly you're coming to terms with things."

Shiroyasha: "Oh? That sounds like you need a favor from me?"

Souta: "That's right. I'd like to ask for your help. Of course, I'll prepare a reward in return."

Kurumi Tokisaki: "@Shiroyasha, let me explain. This concerns me personally."

Kurumi proceeded to summarize the mission details in the chat.

It was better for her to explain in her own words—her determination to rewrite history and save millions of lives would be clearer that way.

After all, Shiroyasha wasn't just some reckless warlord.

She was a guardian of the weak, someone who voluntarily lowered her own divine status to help mortals.

If she felt Kurumi's sincerity, she'd likely be more inclined to help.

Five minutes later, Kurumi finished her explanation.

The chat fell silent for a moment.

Then, she broke the silence herself.

Kurumi Tokisaki: "That's the situation. We need to travel back in time, save the victims, and rewrite history to keep the current spirits from disappearing."

Kurumi Tokisaki: "I know it's an incredibly selfish wish. But if you're willing… Shiroyasha, please help me."

Shiroyasha: "…"

Kurumi Tokisaki: "…Is something wrong?"

Souta: "Kurumi, you don't need to call her 'Miss.' Just use her name. She's already… cough… Anyway, just call her normally."

Kurumi Tokisaki: "Ah… my apologies, then."

Shiroyasha: "I see. I understand the situation now. Saving 150 million lives… That kind of conviction is truly admirable."

Souta: "So, does that mean you're willing to help?"

Shiroyasha: "Throughout history, I have always admired those who embody heroism."

Shiroyasha: "But… I'm not running a charity. If you want my help, you'd best have a proper reward ready."

At that moment, in Hakoniwa, Shiroyasha was lounging in a ridiculously ungraceful pose inside a traditional Japanese room.

The sliding doors leading to the courtyard were open, and a gentle breeze carried the scent of cherry blossoms inside.

Nearby, Black Rabbit—dressed in an extremely embarrassing bunny girl outfit—was brewing tea with a face as red as a tomato.

Earlier, Shiroyasha had given her a new job as a game host.

As "compensation," she had demanded that Black Rabbit serve her tea in this outfit for an hour.

"Shiroyasha-sama, your tea."

Black Rabbit swatted away Shiroyasha's hand as it tried to stroke her thigh, then placed the teacup beside her.

Shiroyasha took a sip and nodded approvingly.

"Not bad. You've improved. Next time, try making tea while wearing a swimsuit."

"ABSOLUTELY NOT!"

Black Rabbit's long rabbit ears shot upright as she took a few steps away.

Shiroyasha sighed in disappointment, then turned back to her phone—completely absorbed in it.

It was actually quite entertaining.

And the people in the chat?

Very interesting.

Kurumi, especially—her willpower and courage were admirable.

Honestly, Shiroyasha had already decided to help the moment Kurumi finished explaining.

Helping someone like her?

Not a bad way to spend her time.

Besides…

She'd be earning points in the process.

What's not to love?

Still, she had her own principles.

She couldn't just say yes right away.

If she helped everyone who asked, she'd never be able to stop.

So, she always demanded a reward—as a rule.