Yes. Yè Hǎi considered it carefully, and this time, he decided to bring the Sound Hashira along for the trip to Yoshino Red-light District.
It wasn't that he couldn't go alone, but that would be troublesome.
Upper Rank Six was actually two demons, Daki and Gyutaro.
These two demons were siblings when they were human. After becoming demons, they also developed a unique bond.
Once either Gyutaro or Daki is beheaded, as long as the other is still alive, the beheaded one can regenerate.
To kill Gyutaro and Daki, you must behead them simultaneously.
Of course, there's another method: exhaust their stamina and prevent them from regenerating.
In other words, kill them the hard way.
But Yè Hǎi didn't want to use this method; it was too inefficient. It would be better to find a Hashira to go with him.
As for why he chose the Sound Hashira?
Yoshino Red-light District is, after all, a mixed bag, and the situation is very complicated.
Even though Yè Hǎi knew that Daki was currently under the alias "Warabihime" and lurking in the Kyogoku House in Yoshino Red-light District, he didn't know how to approach her quickly.
Yè Hǎi had never been to that kind of place! He was completely in the dark, with no way to get close to Daki.
He couldn't just barge in, could he?
Therefore, he had to come find the Sound Hashira.
In the original work, the Sound Hashira, Ushuzawa Tengen, suspected that Yoshino Red-light District was an excellent place for demons to hide, as there was a large flow of people and many undocumented individuals. However, after infiltrating it several times as a guest, he couldn't find any trace of demons. Thus, to gather information about demons, his three ninja wives infiltrated the district.
That's right, three wives, and all of them were beauties...
"Ushuzawa Tengen, you scoundrel, you really deserve to die!" Yè Hǎi thought to himself.
He stood outside and peeked inside. The light was still on!
It seemed he hadn't slept yet. Yè Hǎi nodded and swaggered in, pushing the door open.
He saw a tall man sitting inside, wearing a yukata, with his white hair spread out.
Yè Hǎi stared at him, his mind briefly short-circuiting: "Who are you? You look so familiar?"
"Huh?!" The white-haired man made a "huh cat" meme expression.
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"I'm telling you!" The white-haired man, the current Sound Hashira of the Demon Slayer Corps, Ushuzawa Tengen, looked at the black-haired Vampire sitting opposite him, his tone full of indignation: "For the past six months, you didn't even know what I looked like?"
Yè Hǎi felt a bit awkward but still had to argue: "This is definitely your usual appearance's fault! With your makeup and style, who would even notice your face?!"
"Do you have any complaints about my flamboyant style?" Ushuzawa Tengen slammed the table.
"Huh? I don't have any complaints!" Yè Hǎi's expression was serious: "When did I say I had any complaints?"
Ushuzawa Tengen opened his mouth. Why did he feel like he had punched cotton, leaving him so displeased?
"Hit and run, kid!" Yè Hǎi was almost unable to suppress his laughter.
"Let's get down to business!" Yè Hǎi coughed twice: "I didn't expect your house to be in this mansion!"
"Is this getting down to business?" Ushuzawa Tengen quipped.
However, based on Yè Hǎi's performance just now, he knew it wasn't an urgent matter. So he replied: "Well, I used to be a ninja, and I also serve as the Master's guard. So I live here directly."
"Your house is nicely decorated!" Yè Hǎi looked around the room, somewhat surprised.
He had originally thought that Ushuzawa Tengen's home would be similar to his own style, but he didn't expect it to be quite simple and elegant.
It seems his aesthetic taste hasn't degenerated to the level of a nouveau riche...
"In your eyes, what kind of image do I have?" The Sound Hashira looked at Yè Hǎi's surprised expression and retorted.
He saw Yè Hǎi leisurely pick up a traditional Japanese sweet from the table and eat it: "Put that down! Hinatsuru made that especially for me! Put it down!"
Hinatsuru was one of Ushuzawa Tengen's wives.
"Mmm, it's delicious! Hinatsuru has great cooking skills!"
There's a universal way to change the subject when dealing with someone like Ushuzawa Tengen, who dotes on his wife.
That is to praise his wife!
"Of course! She's my flamboyant wife!" Ushuzawa Tengen's mood improved. If he's praising my wife, then eating a little something of mine is no big deal?
Yè Hǎi showed a triumphant expression and quickly ate another piece.
Perfect, now that there was an opening for discussion, it was time to get down to business!
"Why are you home alone?" Yè Hǎi asked.
"The three of them went to Butterfly Mansion to help out these past couple of days." Ushuzawa Tengen continued, "Recently, demon activity has been increasing, and there are more injured people. Butterfly Mansion is short-handed."
Yè Hǎi pondered.
All three of Ushuzawa Tengen's wives were at Butterfly Mansion, which meant they hadn't started investigating Yoshino Red-light District yet.
The timeline of Demon Slayer is too vague. Yè Hǎi could only judge based on these clues.
And the frequent demon activity leading to more injuries was a plot point not present in the original work.
Was it simply that Author Crocodile didn't write it, or...
No, it was probably the butterfly effect caused by his appearance in this world, Yè Hǎi thought.
"So," Yè Hǎi stopped thinking and looked at Ushuzawa Tengen, a smile curling on his lips.
"I'd like to invite you to Yoshino Red-light District," Yè Hǎi said with a "comical" smile, "Shall we go?"
Ushuzawa Tengen pondered: "Us two grown men, forming a group to go to a pleasure district, is that appropriate?"
Huh? Yè Hǎi was stunned.
Is that the point of the question?