The smiling carefree Saitama passes through the shocked temari demon "Susamaru" and slashes the demon's six arms in an instant.

"Power breathing, second form: consecutive normal slashes..."

[Slashing sounds and sound of limb falling in the ground]

Susamaru make a dumbfounded expression as she exclaimed from Saitama's quick attack.

On her thoughts "I didn't noticed him!? Is he really a hashira pretending to be a normal guy!? No, maybe stronger than that level?!"

The slash produce a powerful wind blowing people around a bit.

Saitama landed in the ground and wipes his dust as his blank expression remains, he then look at the shocked Tanjiro while saying,

"Oi kiddo, are you okay?" Saitama's eyebrow raises

Tanjiro was silent as he nodded slowly while extremely impressed.

He then stare at his younger sister who is staring nonchalant and also copying Saitama's behavior

"N-Nezuko?? Are you trying to imitate like mister Saitama?" he then sighed and chuckles at her.

Tanjiro then stares back at Saitama, becoming more than happy as he can rely on his side.

In Tanjiro's thoughts "Mister Saitama is really powerful in physical strength but I am surprised to what I see right now, if he can wield a sword then he can defeat the demon king singlehandedly..."

Tanjiro smiles and says

"Good job mister Saitama, but the work must be done if you can cut the demon's neck...."

The smiling Saitama nodded as he replies,

"Yeah I know, I did it in purpose, didn't I tell you I need to discipline this cocky girl? she need to learn her place not to disrespect some guys like me..."

Saitama faces infront of the shocked temari demon who is breathing heavily and is nervous, backing off from Saitama while also regenerating her lost limbs.

"Y-you! Who are you!?" The temari demon asked in angry curious tone.

Saitama tilt his head while crossing his arms, his blade at the right hand as he responded,

"Just a hero for fun- no I mean a hero for justice"

Yahaba frowns as he becomes doubtful of Saitama's words.

"You got to be kidding me right? You were just a normal guy we see at night, did you just concealed your identity so you can surprise us with your abilities?" He glares at the blank Saitama, as Saitama doesn't care less.

He shrug his shoulder and says in impatient tone,

"Can we just finish this? After I deal with you, I'll interrogate this cocky girl about your master..." Then Saitama becomes serious now as he isn't going to joke anymore with them.

The heavy aura feels like squashing the demons off, Yahaba backs off a little and notice Tanjiro already gone from his sight.

Yahaba becomes panicked as he look around while raising his hands for battle "where is the hanafuda brat!?"

As he look behind him, Tanjiro appears while holding his weapon, lunging it to the offguard Yahaba arrow demon.

Tanjiro noticed the arrow demon's trap below his feet as he jump upward in quick reflexes, gripping his weapon tight and successfully avoiding the trap.

Before Tanjiro proceed to slash him he was pushed back from the Arrow demon but Yushiro aided him throwing some talisman from the demon's head.

Yushiro shouted "Tanjiro you can see some floating arrows right? That's the power of that demon!"

Tanjiro grins as he replies in loud tone "thank you Yushiro!!"

Yahaba fights back with his koketsu arrow but all of it was evaded by Tanjiro's quick reflexes.

Tanjiro can see the thread at Yahaba's neck, he uses this opportunity to focus until he can decapitate the demon.

Yahaba tried to raise his hand to use his other abilities, but Tanjiro swirls around cutting off the hands of the arrow demon

"Bastard!!" The arrow demon shouts but was beheaded by Tanjiro afterwards.

"Die in peace..." Tanjiro's low tone as he finish the demon off.

Tanjiro recover his breath before running towards Saitama.

Meanwhile....

WARNING: EXTREMELY CRINGE MAYBE I CAN CHANGE THE SCENARIO IF THE VIEWERS FIND THIS NOT FUNNY.

"You are just a stupid arrogant baldy! Don't you dare look down on me as one of the twelve kizuki!!?" Susamaru in loud tone while breathing heavily and angrily

Saitama cleaned his ear with his finger while staring in bored look, he says

"Okay, are you done yapping? If you're done I'll start to discipline you now"

Hearing Saitama's unworried tone and being confident. The temari demon's mouth slightly opened as she was shocked of his arrogance.

"Am I an ant to you? Tell me...baldy?" Susamaru in curious yet shock tone.

"Nah you are just a kid who wants attention, should I say a spoiled brat?"
Says Saitama while looking up and thinking.

The temari demon grit her teeth as she gets extremely enraged.

"HOW DARE YOU--"

Before she can shout in angry tone, Saitama speed blitz her by covering her entire body with a thick blanket only exposing her two available limbs.

Then Saitama lifts her, puts her into his lap and says

"Okay, now time for you to spill out all the information you know.." in serious tone.

Saitama locked her hold making her powerless in his grasp, he then raise his right hand while sitting with her as if a father about to spank his daughter for being a bad girl.

"Damn you baldy!!!" She shouted angrily as she can't move due to being covered in the blanket

Saitama ignores her insults as the hero's expression goes dark, the hero then says "Serious Series, Power Breathing Tenth Form: Serious Discipline Spank"

Saitama slaps her butt and it makes a loud noise, she suddenly yelp and her cheek turn red

"Mmggghhhh!" She covered her mouth getting embarrassed

Tanjiro, Tamayo, and Yushiro were dumbfounded and extremely feeling embarrassed.

Yushiro was speechless as he remain staring at them with amused expression

"Not bad baldy, not bad..." Yushiro smirks and let out a snorting laugh.

The nervous smiling Tanjiro was trembling and extremely embarrassed of Susamaru's side, he just hugged the nonchalant Nezuko and looks away while saying

"N-Nezuko, remember I won't do that to you...." He then whined and feels like he is about to pass out from cringe.

Saitama raises another hand for another slap and says to the helpless Susamaru

"Oi, now talk about what you know about your legions...!"

Susamaru remains silent while trembling and getting extremely embarrassed, her mind start to spin as she is afraid to resist against Saitama due to his heavy pressure. Her instinct telling not to break free or else she is dead meat. She gulped and says

"I..I..." In stuttering tone

"What?" He then slaps her butt for a second time, the temari demon now yelps with teary eyes of embarrassment

Saitama then raises another slap as he stare at her with cold expression

"Tell me, are you gonna submit to us and tell us the information or you'll just die from us?" in serious tone as Saitama remains detailed.

"N-nooo!" She tried to fight back but Saitama gave her a powerful slap in the butt,

[Loud Slap Sound, the ground trembling sound]

The slap produce a powerful quake and it removes the curse of the temari demon.

Their curse for saying their master's name which is "Muzan" will let them die in the most painful way but the unaware Saitama removes it with just a supernatural slap???!

The prideful arrogant temari demon who is extremely loyal and scared to Muzan Kibutsuji, surrenders herself and giving out all information she knew.

Luckily, she didn't die as she spit out on what she knew about Muzan Kibutsuji. She cried in agony and promise herself to help Tamayo and Yushiro in exchange for their forgiveness.

Tanjiro was shocked yet impressed of the temari demon's submission and even wonders why she didn't die from the curse just for spitting out the information. Tanjiro just smiles as he tap Saitama's shoulder and says

"Mister Saitama, a job well done.." he grins cheerfully.

"Heh, well that is the most peaceful way to bribe some demons you know" he smirks trying to be funny.

Saitama then scratches his head as he look for the second demon,

"So where is the arrow demon?" While looking left and right.

Tanjiro smiles awkwardly as he answers him "I slayed him..."

"Ah too bad, if you just spare him I can just gave him a disciplining slap too" Saitama sighed.

Tanjiro just laughs out loud at Saitama's demeanor, he then stops and says

"Mister Saitama please, join with us in the demon slayer corps!!" He smile while his eyes sparkle.

Nezuko nodded while making a "mhmhm" sounds.

The sighing yet happy Saitama nodded as he pat their heads and says

"Yes, now let me be clear, the name was Muzan Kibutsuji and they have some lower and upper moons right from what we got the Intel from the temari demon?"

Tanjiro let out a gasp from his mouth as he becomes awkward and says

"M-Mister Saitama, I forgot to tell you but the man we meet at the Tokyo.....was actually the demon king..."

"Huh? Come again...?" Saitama crosses his arm with his eyes wide open.

"T-the man who infected the stranger was....the demon king" he turn back and gets embarrassed for telling Saitama this late.

"D-demon king!? Are you joking, That Micheal Jackson guy!? Sighed...." Saitama sighed deeply like a whining puppy. "Tanjiro why??" He grab Tanjiro's shoulder, shakes him and says like a whining kid complaining about the wrong food.

"S-sorry mister Saitama...." He smile nervously and facepalm himself in disappointment

[Awkward music plays]

Tamayo and Yushiro were chilling themselves and then let out a small laugh as they see their hilarious behavior.

Tamayo in her thoughts "I hope this man and this kid will be the savior of the world..." she smiles.

After their small chatter, Tanjiro begin to collect Yahaba's blood remains and also collect some of Susamaru's blood for Tamayo's study.

Susamaru become weaker and lost her blood demon art, she can still grow arms but can't use abilities as it was disabled in unknown reasons, but she remains a demon, she is now a good assistant to Tamayo and Yushiro, she is also a maid.

Saitama, Tanjiro and Nezuko went inside the house to eat and rest, later then...

Chachamaru the cat is introduced

"Tanjiro, this is Chachamaru, he will collect your collected blood samples and will appear when you call him" says the calm Tamayo.

Yushiro nodded as he says

"There will be no need for the 3 of you to come here again, Chachamaru will aid you in collecting blood samples, but we hope we can collect some of lower and upper demons if possible..."

Tanjiro smiles and nodded as he says "I got it, then I'll rely to Chachamaru..." He then pet the cat's fur.

Saitama tremble as his hand is itching, he suddenly pull the cat towards his body and pet it and cuddle it "good little kitty~"

"Oi!!! He is not a pet!!!!" Yushiro shouted as he try to separate the charmed Saitama and the annoyed growling Chachamaru.

Tamayo and Tanjiro laughs at them in friendly tone, they were amused of their behavior especially Saitama's obsession from cats.

TO BE CONTINUED

Hello, should I skip the Zenitsu and Inosuke encounter and just go straight to the Spider Family arc?? Or should I not skip and just continue??

If there are grammatical errors or something wrong, please tell me ASAP