At the Butterfly Mansion,
After a day of arguing, neither Shinobu nor Kanae had convinced the other. They seemed to have debated until midnight before embracing and crying together. Even Kanao, who had been standing by, shed a few tears.
Naturally, after this incident, people from the Demon Slayer Corps came begging Kaito to revive various individuals. Even Ubuyashiki, assisted by Rengoku, personally visited.
Unfortunately, Kaito refused them all, stating that reviving Kanae was part of a contract with Shinobu, and she had paid the price.
Reviving others was impossible.
In short, he brushed aside all the troublesome requests.
"You and your sister decide how to handle it. Either way, one of you will have to leave."
In the rear garden's tea room, Kaito said with a smile to the still-arguing Kocho sisters. He then prepared to head to Osaka.
After all, rather than continuing to wait here, it was better to get what he needed done.
He really coveted Nakime's Blood Demon Art.
As they say, time is king, space is sovereign.
Nakime's Blood Demon Art allowed her to freely manipulate the spatial layout of rooms and stairs within the Infinity Castle by playing her biwa.
She could alter the Infinity Castle's structure, which could even be used to evade attacks or quickly relocate targets inside the castle.
She could also forcibly teleport things from outside the Infinity Castle into it, or out of it.
In the original work, when the Upper and Lower Ranks gathered, it was precisely this teleportation Blood Demon Art that was used to summon all of them.
This was Nakime's Blood Demon Art. Based on its demonstrated capabilities, it was already a superpower related to "space".
He wasn't particularly interested in the Infinity Castle itself, but if he modified it slightly and integrated it with his acquired Jade Chamber...
That would be truly interesting.
Then, if he used an Upgrade Card on it, he wondered if the ability would develop as he hoped.
That is, exploiting a loophole in the chat group system to bring ladies from different worlds into the Jade Chamber.
"Mitsuri, you'll stay here for now. This might take half a day, maybe a day or two."
"I understand. Go on, husband~"
"Okay."
After saying goodbye to Mitsuri, who always wanted to be affectionate, Kaito took control of the rock platform and flew off.
He headed straight for Osaka.
After about half an hour, he arrived at the designated large city and stopped. He began to survey the entire town.
The larger the house, the more it became his primary target for investigation.
Regardless of what was happening inside, Kaito's first priority was to locate Demon presences. Once found, he would precisely identify each individual through their presence and conduct a secondary scan to see what they looked like.
One, two, three...
Goodness! The simulated map in his mind rapidly showed over 30 red dots!!!
And when he carefully screened them, holy cow, he found Upper Rank Demons here.
Upper Rank Three, Akaza!
Upper Rank One, Kokushibo!
However, these two Upper Ranks were staying in very luxurious feudal lord's mansions.
As for other notable Demons, he didn't see any.
'Should I catch these two and ask them?'
Kaito stroked his chin in the air. This plan was good. The biggest drawback was that all Demons shared memories with Muzan.
Even if he captured Kokushibo, Muzan would likely sense it during the interrogation and have Nakime hide him.
As for willingly handing over Nakime?
That might be a possibility, considering Muzan's despicable nature.
But equally, there was a high chance he would simply go into hiding and ignore everything.
After all, Nakime's ability was very useful to him, especially for hiding.
Whenever needed, no matter when or where, he could contact Nakime to get him out.
"It seems... this probably isn't the place."
After a thorough search, Kaito sighed regretfully.
Including the surrounding small towns and villages, there were about 68 Demons here. Among such a large number, none matched Nakime's description.
Oh well, on to the next one.
If he couldn't find her in all of Osaka, he would expand his search to the whole of Japan.
If that still didn't work, he would have to capture a Demon and interrogate it.
It was a shame...
In all those gacha pulls, he hadn't gotten an item or ability that could precisely locate or find a person.
If he had, he wouldn't have to search one by one like this.
Although he had SSS-Class strength, it was purely combat-oriented. He wasn't well-rounded yet; there were still some shortcomings.
"There's the main Osaka train station here, and many Western-style buildings. I wonder if I'll find her here..."
"Ah, found her."
'So she was here after all?'
Not only did he find Nakime, but he also found Muzan.
At that moment, Muzan was disguised as the son of a wealthy family, with Nakime serving as his attendant, always by his side.
Their location was the largest Western-style mansion in this town.
Well...
Looking at the total number of red dots in this town, it was over 300.
'Over 300, tsk tsk tsk. This was probably one of the Demon nests, right?'
'And there were two Upper Rank Demons and three Lower Rank Demons here as well.'
"Oh... who would have thought. The young master of the Chaihe family, you actually enjoy studying medicine?"
Appearing inside the large Western-style mansion, Kaito instantly grabbed Nakime and used magic to completely restrain her. He then suddenly felt like toying with this pathetic boss.
It seemed he was disguised as a returned overseas student, a physician, openly working in his workshop, studying medicine.
Truly eager to learn!
"You... who are you? What have you done to my attendant?"
With his slicked-back, side-parted hair, Muzan put down the test tube in his hand, his expressionless face turning to Kaito as he asked calmly.
He seemed to be acting as if everything was normal.
"I haven't done anything. I'm just going to take your attendant away for a bit."
"Oh... Breaking into my home and now trying to take my attendant. You have quite the nerve!!"