Souta briefly introduced the information about Kamado Tanjiro and his sister Nezuko in the group, mainly explaining Nezuko's physical and mental state after becoming a demon.
Souta: "When a newcomer first receives the invitation, the system asks them to input a nickname. If Nezuko had already turned into a demon and couldn't speak, the system would use the name she subconsciously thought of. If she wasn't thinking of anything, her real name would be used."
Tokisaki Kurumi: "I see. After turning into a demon, her thoughts were muddled. Because she deeply missed her brother, his name was subconsciously used as the nickname?"
Tohsaka Rin: "If her intellect and behavior regressed to a childlike level, that also explains why she hasn't spoken this whole time. I think Souta's guess is spot on."
Altair: "I also think it's highly likely. And it confirms one of my own guesses."
Souta: "Guess? What guess?"
Altair: "Didn't I say I had a feeling you were going to be the only male member of this group?"
Altair: "The name 'Kamado Tanjiro' sounds male, and I thought we'd finally get another male member. But turns out it's a girl again. Seems I was overthinking it."
Souta: "That's not certain! I only said it was a guess. Maybe Tanjiro ran into trouble or simply doesn't trust the system, so he hasn't spoken."
Altair: "Didn't you say he was cheerful and kind? His wariness shouldn't be that strong. I'd say there's a 50% chance the newcomer is his sister."
Souta: "50% is still pretty high."
Altair: "I wasn't done. I meant 50 out of 100."
Nice one, Altair, learning how to tease people now?
You look so serious usually, didn't expect you to betray the revolution!
Tokisaki Kurumi: "Anyway, we can't just leave the newbie alone. Souta, didn't you say you were going to investigate?"
Souta: "Yeah, I plan to buy a 'Travel card' and go check it out."
Tokisaki Kurumi: "That costs 500 points. You shouldn't pay for it alone. I'll split it with you."
Altair: "I don't mind helping either. Let's split it three ways."
Shiroyasha: "Hold on. Since I've taken on the title of a benevolent god, I can't just ignore this. Count me in."
Shinobu: "I also have some points."
Souta: "Shinobu, better not. I remember you only earned 700 points from the last rescue mission and paid me back 500, leaving just 200. You were also going to let me take the solo missions. I'd feel bad asking for more."
Souta: "I'll cover your share."
Shinobu: "Alright, since you insist, I won't argue."
Tokisaki Kurumi: "Alright then. Souta, I'll transfer the points to you now."
Souta: "No problem. After I help you with the rank-up, I'll head to the newbie's world."
Soon after, Souta received the transfers from Kurumi, Altair, and Shiroyasha.
The members were all generous and supportive, which warmed Souta's heart.
But then he remembered the new members and got a headache.
Athena's situation was still unclear.
As for Luo Hao... hopefully she wouldn't clash with anyone in the group.
If she angered Shiroyasha, Souta couldn't guarantee she wouldn't get smacked around via a crossing card.
Although group members couldn't kill each other, a good beating wasn't prohibited.
"Whatever, I'll mediate if needed. It'll be fine."
Shaking his head, Souta stopped worrying.
Souta: "System, take me to the Date A Live world."
A flash of light later, he vanished from the rental apartment.
This time, Souta didn't visit Miku but instead went straight to find the former antagonist Isaac.
Even though Isaac was protected by Ellen, she was just a human, unlike Mio Takamiya with her overwhelming spiritual power.
Souta found them at DEM's HQ, froze them with a time-stopping skill, and quickly copied the "Spirit Formula" from their memories. After confirming everything matched, he left that world.
Visiting friends could wait.
For now, strengthening Kurumi was the top priority.
"The Spirit Formula is truly amazing. A single formula can affect the spiritual veins of the entire Earth..."
As Souta reviewed the formula in his mind, he was impressed.
It seemed to be a method capable of directly interfering with how spiritual power operated—like the fundamental forces of the universe that govern everything.
While his divine power couldn't threaten Earth directly, if he altered basic forces like the Coulomb force in a planet's core, who knows what might happen?
That idea alone was terrifying.
"The formula gathers spirit energy to create powerful sephira crystals like Mio's."
So, with divine power enhancements, it should be possible to modify the formula to help weaker crystals evolve by drawing on Earth's spirit veins.
This aligned with the formula's original function, so it wouldn't require much divine power to tweak.
"Just how strong can you get with this method?"
His eyes gleamed with anticipation.
The original series never specified a limit for sephira crystal power.
The reason only one Earth vein was used was simply because only one existed in the story.
But now, with time travel available, that limitation was gone.
Kurumi's potential for growth was now immeasurable. Could he just lie back and enjoy being her freeloader?
Excited by the idea, he tagged Kurumi in the chat.
Souta: "@Kurumi. Are you and Chelsea done with your business?"
Tokisaki Kurumi: "Yes, we just got back to the future."
Souta: "Then I'm coming over now. I've got the Spirit Formula."
Tokisaki Kurumi: "Alright. I'll wait for you at Path of Peace."