Departure

Approximately ten minutes.

The members of the Demon Slayer Corps watched as Uchiha Sora and Shisui reappeared, holding a wooden box with an ancient, intricate pattern in their hands.

Intuition told them that this was the Infinity Castle, the dwelling place of countless demons.

At this moment, Uchiha Sora's gaze shifted toward Nezuko in the crowd.

She had once been the only demon to overcome the sun, and the only existence to have transformed from a demon back into a human.

As he stared, the atmosphere in the area grew increasingly oppressive.

Whoosh!

Tanjiro stepped in front of Nezuko, the young man's hoarse cry exploding in the deathly silence.

"Please, listen to me!"

"Nezuko is no longer a demon; she will absolutely never become one again!"

"Even when she was a demon, she was a good girl who used her instincts to refuse human blood. Absolutely! She would never lose control!"

"I beg you! Please, give her a chance!!"

"Don't be so nervous; I didn't come here to exterminate demons."

Uchiha Sora waved a hand and said indifferently, "Trouble yourself to give me some of your blood, or a potion containing the Blue Spider Lily. I'll take it back and have someone concoct a remedy."

After fully mastering the Infinity Castle, Uchiha Sora had discovered one of its flaws.

As the one who managed the Infinity Castle, Nakime could not use her Blood Demon Art during the day.

To change this, he needed to help her overcome her fear of sunlight.

A young girl wearing a butterfly hair ornament approached and took out a vial of medicine.

She had beautiful purple eyes. After handing the potion to Uchiha Sora, she gathered her courage and asked, "Sir... what do you intend to do with Muzan?"

Uchiha Sora weighed the wooden box in his hand and said calmly, "Keep him as livestock."

"But... they are monsters that need to consume human blood!"

Uchiha Sora smiled faintly, "If even that little girl could suppress her bloodlust through instinct, the only reason they can't is because they haven't been beaten enough and haven't been properly broken in."

He believed those guys could overcome it. How could something that could be sated by other blood not be able to resist human blood?

When it came down to it, they just hadn't been hurt enough.

Shisui returned the bandaged Kaburamaru to Obanai and said with a smile, "Sorry for the trouble."

"You are... truly gentle." Obanai was known for his sharp tongue and poor emotional expression; this was not something he would typically say.

Shisui pursed his lips and smiled, "Although I don't know the full story... in a world like this, you have all worked hard."

This mission only yielded twenty reputation points, which was all Obanai could afford to pay.

Uchiha Sora barely made a profit on this trip; the reputation points for his and Shisui's transit were permanently deducted by ten, meaning only ten points were actually credited.

Regardless, he hadn't come for the reputation points; he had come to familiarize himself with how the platform operated, and to acquire the Infinity Castle.

"User application received, calculating value of carried items."
"Biological entities possess no capacity for resistance; charged at the minimum standard. User has named the space node 'Infinity Castle'. Transit fee: 30 reputation points, permanently deducted. Accept?"
"User's transit ability has increased slightly. Returning while maintaining current ability level incurs an additional 0.3 reputation point cost. This is a mandatory charge and cannot be revoked."

There was a lot of information to process.

First, capturing people from other worlds was feasible; as long as they lacked the capacity to resist, the reputation cost was minimal.

So, could he bring someone along during transit while they were resisting? Would the consumption be high?

Second, the power he gained in another world could be brought back, and it couldn't be revoked... which meant the platform did not have the ability to strip away the power he had grown.

Previously, Uchiha Sora had guessed that he wasn't here in his true body, but that the platform had projected him over.

After all, in his view, compared to transporting a person through time and space, creating a clone with equal abilities would surely save more energy.

But the platform didn't seem to calculate it that way; it was transporting the real him directly.

It was like two fish tanks, scooping a fish out of one and dropping it into the other...

Just as he was thinking this, the platform's notification sounded again.

"Detected that the user has completed two lending relationships with this dimension. Would you like to mark this dimension?"

Mark... what did that mean? Didn't his previous imprint count as a mark?

"After marking a dimension, all missions within this dimension will be accepted by the user. Until your death, other agents will not participate in missions within this dimension."

Other commissioners...

"Can I contact other users?"

"The platform is managed by ****. You currently lack the clearance to know. Please accumulate Reputation Points to upgrade your clearance. The truth you crave will not be hidden by the platform."

Uchiha Sora changed his question.

"Will ghosts appear in this world again?"

"According to the platform's calculations, the probability of extraordinary creatures reappearing in this dimension is lower than 0.00012."

Is there a limit to marking dimensions...

"At the user's current Black Iron grade, you may mark one secondary dimension."

Then why did I have a brain fart and mark this one?

"Per the user's previous loan request, the relevant explanation has been simplified."

"In ten seconds, the traversal will begin."

Uchiha Sora had also asked if he could open a subsidiary, but the answer he received was the same as before: a censored word, insufficient clearance.

Looking at Kagaya Ubuyashiki, who had summoned him in the beginning, Uchiha Sora revealed a gentle smile.

"Muzan will not be in this world anymore; your family's curse will be lifted."

"Rest easy in your passing, Kagaya."

This sentence sounded quite unpleasant, like a curse.

It caused the breath that Kagaya had been forcing himself to hold to dissipate.

He didn't even have the strength to say goodbye.

Lady Amane held her husband's gradually cooling corpse without weeping.

She knew that being able to witness the family's curse being eliminated in this generation meant that Kagaya died with more peace of mind than any previous family head.

He... must have carried a joyful heart as he went to convey this good news to their ancestors.

When she looked up again, the figure of the youth who had brought salvation was gradually fading away.

--

--

User Name: Uchiha Sora.

Energy Level: Black Iron.

Accumulated Reputation Points: 912 (700 points frozen), 212 points available.

"Loan project completed: Rotten Wood Grade, Kagaya Ubuyashiki's wife and daughter rescue mission."

"Loan project completed: No Grade, Obanai Iguro's companion beast Kaburamaru treatment mission."

--

In Progress--

"Current loan project: Sky Divine Beast Rayquaza."

"Project Grade: Gold."

"Current loan project: Marine Vice Admiral Akainu Sakazuki."

"Project Grade: Silver."

--

Rayquaza Experience Card: User currently holds 20% of Rayquaza's instinct for energy operation, randomly mutated into 50% chakra control.

Compatibility Amplification...

Akainu Experience Card: User holds...

--

Uchiha Sora carefully reviewed the information branching out like tree limbs, feeling the traversal about to arrive.

He looked at everyone and smiled slightly:

"It is best we do not meet again. Live your lives well."

His figure vanished completely, as if he had never existed at all.