Ryu: UGHHH, if I knew I was that out of practice with my flames I wouldn't have bothered at all.

Ryu was walking as his arms were bandaged and he seemed to be especially uncomfortable with Ruby by his side.

Ruby: Well if you hadn't done something so overkill you would've been fine.

Shojo: She's right. You just showed off at that point.

Ryu: -_- I don't need two nags on my back right now. I already got an earful from Hagumo for Damn near melting his sword.

Tanjiro Inosuke and Zenitsu were training hard as they were at the Butterfly Mansion. 4 months had passed since the Magen train and each of the young Demon Slayers were inspired as Ryu did it all himself.

Ruby: Looks like you're having a positive effect on the boys.

Ryu: I did for everyone who wanted to be stronger. Hell even some of the Hashira like Rengoku and Gyomei are trying to step up their game to keep up with me.

Ryu immediately saw a flew in their training as he walked towards them.

Ryu: Steady your breathing you three! Just because you've been doing this for a while doesn't mean you can afford to even get shaky!

Tanjiro: Right!!

Inosuke: YEAH!!!!

Zenitsu: AHHH!!!

He walked back with a satisfied look.

Ruby: Drill sergeant Ryu?

Ryu: Nah that was just me pointing out a flaw. They've got skill and talent but are all around still green.

Ryu glanced to the side seeing another girl there.

Ryu: Kanao, you should join them too.

KANAO TSUYURI!!

Kanao: Um... That may not be a bad idea... But I respectfully decline sir.

Ryu: Okay, one, cut it with the air crap, it's super weird to me. Second, that could help you break out of your shell more.

Kanao seemed to stutter at this unable to decide herself.

Ruby: Heads you do it, tails you don't?

Kanao quickly rushed to get a coin from her pocket flipping it. Before she could grab it she found that Ryu had done it first.

Ryu: AH- None of that. It's a crutch at best. You chose this one.

Kanao seemed to stay silent for a bit before looking up.

Kanao: I-I think I will train with them.

Ryu lightly smiled placing the coin back in her hand.

Ryu: See? Not to hard when you try. Also you didn't have to, no take backs though.

Kanao almost deadpanned hearing that before running to the boys.

Ruby: What was-

Ryu: Just a little gamble. If she didn't do it, it was either because she didn't wanna make the decision without the coin. If she did, it would've been because that, she didn't wanna disobey a superior, or she wanted to.

Ruby: But what about her not wanting to?

Ryu: That wasn't an option Rubes. She did want to.

Ruby: ... Oh you're good.

Ryu: I'm smart.

TIME SKIP!!

The next day Ryu was in bed clenching his fist.

Ryu: Should be back at 100% in a day or two.

He summoned the white flames in his hand.

Shojo: Slowly starting to get used to flames again too.

Ryu: Yeah. I can't believe it's been nearly 5 years.

He dispersed the flame before sitting back. That was until he heard screams coming from the yard. Ryu immediately got up and kicked down the door walking towards the yard. What he found was a scene he wasn't too sure to what to think of. Tengen Uzui was holding Aoi and another one of the small girls with Tanjiro yelling.

Ryu: *Sharp Inhale* Uzui, I'll give you one chance to explain why the hell there's such a fucking ruckus and your grabbing two of the girls.

They all looked to the sound of Ryu's voice and saw him with a VERY annoyed expression.

Tengen: RYU! I've been meaning to see you!

He jumped down but immediately stopped upon seeing Ryu's annoyed look closer.

Ryu: I'm fucking waiting.

Tengen: Well you see I'm going on a mission to the Red Light District and I need women to go so I had to pick the ones that were capable here!

Ryu: ... Aoi maybe but Naho? You serious?

Uzui: ... Ok I was short on options.

Ryu put his hand on his shoulder as the Hashira knowing exactly what he was about to do backing away.

Tengen: H-Hey, let's just talk about this!

Tanjiro: We'll go in Aoi's stead then!

Tanjiro shouted as both Zenitsu and Inosuke dropped beside Tanjiro.

Ryu: If that is not the most timed shit I've ever seen.

Tengen looked at them before sighing.

Tengen: Oh alright.

Soon Ruby appeared in a burst of rose petals.

Ruby: Uzui, why are you holding-

Tengen: But don't you dare defy me, punks.

He slapped Aoi's rear severely confusing Ruby as she put a hand on her scythe.

Ruby: You feel like explaining yourself?

Tengen the REALLY began to sweat.

Tengen: ... Extra flamboyance was needed.

Ryu held Ruby back by the hood.

Ryu: Looks like there's gonna be more work to do.

TIME SKIP!!

Ryu was for some reason putting pressure on Tengen's back with his foot as he couldn't break free.

Ryu: So, Imma give you one chance to redeem yourself. If anyone is ANY kind of God here, who is it?

Tengen: ... You are...

Ryu: Damn fucking right.

Ryu took his foot off the Hashira as he got back up dusting himself off.

Tengen: Even when drained you're still faster than the eye can track.

Ruby: Uzui, he beat two of the Top Three Upper Moon Demons at once, that's a normal for him.

Ryu: And just to be clear, these injuries are cause of my own strength. Not exactly them.

Inosuke: You hurt yourself with your own strength?!!

Zenitsu: How the heck does that work?!!!

Ryu: That's a story for another time. Anyway we should get ready at the Wisteria House before heading to the Red Light District. Try to keep up.

Ryu ran fast forward as everyone bar Ruby was taken aback by his quickness.

Ruby: Wait up!!

Ruby followed with Tengen in pursuit and lastly the younger boys. After some time they made it to the Wisteria House.

Tengen: Once we infiltrate the Red Light District, we have to look for my wife. I'll be looking around for information on the Demon as well.

Ruby covered Zenitsu's mouth feeling as if he would say something idiotic.

Ruby: He's not talking about personal brides.

Zenitsu looked at Ruby shocked before removing her hand.

Zenitsu: That's all in his head ri-

Before he could even finish he was slapped by a bunch of letters.

Ryu: HA!!

Tengen: HERE ARE THE LETTERS SHE SENT ME VIA CROW!!!

Tanjiro: That sure is a lot.

Ryu: The fu- Why would she be sending you that many letters constantly?

Tengen: I have three wives.

Zenitsu had gone into complete freak out mode annoying everyone. That's when both Ryu and Tengen nailed him in the stomach with punches knocking him out flat.

Ryu: I've been waiting to do that.

Tengen: Anyway, my three wives are all top of the line female ninja, Kunoichi.

Ryu: Wait wait wait, you're saying you're a ninja?

Tengen: Yes.

Ryu seemed to have an indifferent look on his face as he was thinking.

Ruby: Something wrong?

Ryu: Nothing just... Nostalgia.

INSIDE RYU

N had looked in shock hearing what was said by Tengen.

N: ...This is the first time in a long time that I've been stumped on what to say.

BACK OUT

Ryu: Anyway how are we gonna do this?

Tengen: Well, we're gonna be disguised of course. And as much as I hate the idea, be plain.

Ruby: ... So you've got some wigs and contacts right? Me and Ryu kinda stick out like sore thumbs.

Tengen: Of course. And also, the households that my wives are in only allow daughters.

Ryu: Well Ruby, Tanjiro, Zenitsu, good luck.

Tengen: Actually I'll need Ruby with me. Two men that are over 6'4 may stick out a bit too much.

Ryu: ...Alright Inosuke you're up.

Inosuke: WHY ME?!!

Ryu: Which one of us looks more like a girl, is shorter, and has the less masculine voice?

Ruby: Actually Ryu haven't you told me-

Ryu: Ruby, provoke me any more than that an I while chuck you through the window.

Ruby covered her mouth.

Tengen: Kaizen, whatever she was about to say, if it could help in any way we must do it.

Ryu: -_-

TIME SKIP!!

The Demon Slayers had infiltrated the Red Light District as Tanjiro Ruby and Ryu were disguised and wearing makeup actually making Tanjiro look feminine. However Ryu's situation was a bit more...

Literal.

He had actually become a girl and

Ryu: '-_- Note to self: Beat the shit out of Tengen and steal Ruby's cookies.'

The first to be told off was Tanjiro.

Tengen: Ugh, I was hoping I could sell him for a little more. You guys better do better.

He received a hard punch in the side from Ryu.

Ryu: Shut up.

Ryu's voice had changed to be more feminine as just hearing his voice made him internally weep.

Ryu: Just why?

They heard a crowd gathering as the turned and saw a beautiful woman was in the center of it.

Tengen: It's Koinatsu Oiran from the Tokito house.

Ryu: Alright then let's just do this.

Ruby: Also, might wanna put a hold on swearing for a bit Ryu.

Ryu: ... But that's how I relieve my stress...

Random: Excuse me sir, would like to take this young girl in.

A woman walked up to the gesturing to Ruby.

Random: I am part of the Ogimoto house. My eyes don't deceive me.

Ruby: 'Looks like still having the face of a little kid's come in handy.'

Tengen: Oh of course!

Ryu: Be well Rukia.

She walked off with the woman as Ryu and Tengen looked at each other.

Tengen: ... What do I have to do to make this up to you?

Ryu: Never ask me to do this again and we're good.

TIME SKIP!!

After quite some time Ryu, or Ryuko was taken in to the Kyougoku house.

Ryu: 'Ok, if I was Kunoichi, where would I be hiding?'

Ryu calmed himself before sensing all around him.

Ryu: 'Sound, smell, and vibrations. Any oddity might be useful.'

A few seconds later he heard crying before his eyes shot open.

Ryu: Nope.

He rushed to where it was coming from before seeing a girl was crying in a ruined room.

Ryu: H-Hey, what's wrong?

He/She-

Ryu: 'SHUT UP!!'

Walked over to the girl kneeling down.

Ryu: Hey, if you're worried about something I can-

Ryu stopped his sentence feeling an ominous presence behind him. It was a woman who seemed to have a stern look and a few veins on her face.

???: What're you doing in someone else's room?

Ryu: '... She gives me vibes almost like those Demons I killed. She's definitely an Upper Moon. I won't be able to use everything in this form.'

Girl: Wa-Warabihime Oiran, that was the girl who came in yesterday on the day before, s-so...

Warabihime: Huh? So what of it?

Girl: We're sorry for just barging in!

Ryu: The room was a complete mess and I saw a girl crying so I...

Warabihime: *Grumble* Such beauty waisted on a stupid girl. And yes, the room is dirty. That's why I told her to clean in up.

He pulled on the girls cheek earning a pained yell from her.

Girl2: AHH!!

Warabihime: Shut the hell up!! Don't just scream, clean up the damn room!!

Girl2: I'm sorry!! I'm sorry!! I'll clean it up right away!! Just please forgive me!!

Ryu seemed a bit silent before grabbing Warabihime's wrist.

Ryu: Let, her go...

The demon tried to wriggle free of the grip but found that it was difficult.

Warabihime: 'How the hell can a human girl have this much raw power?!'

She looked into Ryu's eyes seeing that the blue and red were showing through the contacts.

FLASHBACK!!

The demon in her true form was walking on the roof of a house.

DAKI!!

She walked on the rooftops and went into a house through widows but was shocked to see someone.

???: How're you doing?

Daki: L-LORD MUZAN!!

MICHAEL- MUZAN KIBUTSUJI!!!

Muzan: You seem to have eaten quite a lot of humans. You've gotten quite stronger compared to before. That's good.

She immediately got on the floor bowing.

Daki: Yes!!

Muzan: But don't let your guard down. If things are going too well, you can easily get tripped up.

Daki: I'll keep that in mind...

Muzan: The most important matter however is that a truly powerful Demon Slayer has risen. One that truly is a fearsome opponent.

Dali's eyes widened as she looked at Muzan.

Daki: A Demon Slayer you see as a threat?!

Muzan: This Demon Slayer was able to kill both Akaza and Doma on his lonesome. The only damage he received was from his own power.

At these words Daki began to tremble in fear.

Daki: Both Akaza and D-Doma have been-

Muzan: This means that you must be wary. That man has physical strength that was equal, or maybe even stronger than the two.

Daki seemed to be shaking from the words spoken by the plum eyed Demon.

Daki: 'I-If the 4th and 3rd strongest Demons have been defeated, th-then if I encounter that man I surely will-'

Muzan had stuck his finger into Daki's head injecting his blood into her. Her eyes widened as power began to course through her body making her shout.

Muzan: This portion of my blood will increase your power. Watch out for a Slayer with red eyes with blue pupils.

CHAPTER END!!