[3rd Person POV]
Tanjiro Kamado, the boy who met Kibutsuji Muzan and got out alive...the Hashiras were surprised by this with the exception of Tomioka Giyuu.
As Uzui Tengen and Shinazugawa Sanemi continued to interrogate the eldest Kamado sibling, one Demon Slayer raised it's hand to ask a question.
"Uhmm...if it isn't too much to ask, may I know who this Moose Man Key butt touche is?"
A 16-year old called Y/N L/N tilted his head in an innocent manner, nothing but curiousity in the boy's bright E/C eyes.
Kagaya Ubuyashiki smiled at the smol boi before proceeding to explain who "Muzan Kibutsuji" is, as well as to why he must be "defeated".
"Hm. Hm! I think I understand! So, if we finally kick his butt, will we find peace after?"
"Yes. That is the goal."
"Oohhh! Uhm...One last question??"
"What is it, my child?"
"Why are they so mean to Tanjiro chan?"
Y/N had a worried look on his face which prompted Kagaya to immediately act on it and silence the noisy Hashiras, effectively putting them in their place.
Then a test of will happened...Sanemi Shinazugawa, a marechi with the rarest blood, challenged Nezuko Kamado's resolve...
It was an intense time for Nezuko, staring and trying to resist the marechi's blood as the Hashira watched intently.
Y/N was patting Tanjiro's back as this happened.
Y/N is the only one of the Mizunoto Demon Slayers allowed to enter the Ubuyashiki Residence and talk so casually with Kagaya as if he were the boy's father, which he kinda is...to an extent.
The night when Kibutsuji eliminated the
L/N clan and overlooked Y/N's escape was also when Kagaya Ubuyashiki found Y/N and decided to shelter him from the night.
Since then, he obligated himself to become a parent for the boy. Kagaya also's the one who helped Y/N control his Sharingan, an ocular power that only the L/N clan possessed.
Back then, Y/N would get terribly sick because of the Sharingan's requirements of a body that is needed to react as fast as it could see.
He would also overuse the Sharingan, leading to Y/N sleeping for an extended period of time.
When Y/N finally mastered the use of his Two-Tomoe Sharingan, then he became a much more skillful Swordsman.
Y/N taught himself how to fight with the sword and created styles for it. The L/N clan's rare ability enable it to create Breath technique that is almost impossible for other Demon Slayers to imitate.
And when it was time, Kagaya urged Y/N to participate in the Final Selection, where
Y/N had came to meet Tanjiro Kamado and the box he was carrying.
They separated, but met again when an unconscious Tanjiro was being carried by a Kakushi as an order by Kagaya Ubuyashiki himself to the pillar meeting.
Y/N shows great potential, but his childish innocence and merciful self, hinders his growth, but nobody really wants it to disappear, they all endear his bright energy...but that story will have to come for later.
"There, There, Tanjiro chan. Your sister will be fine!" Y/N encouraged the injured Mizunoto just in time for Nezuko to turn her head away from the blood in disgust.
Of course, this brought surprised reactions to the Hashiras except Tomioka Giyuu, who anticipated this would happened.
"See? I told you!"
"T-Thank you...for believing..."
"What're friends for?"
As the two had their "Friendship moment" a certain Hashira couldn't help but compliment them.
'Ah! The friendship of two boys is so beautiful! They've only known each other for a day and a half, but they act like they've known each other for so long! How amazing!'
Mitsuri Kanroji, The Love Pillar complimented them in her head.
"Then, allow me to take Kamado kun to my house!"
Shinobu Kocho, The Insect Pillar, also Y/N's "Onee-Chan" raised her hand similar to that of what would Y/N do in order to voice her suggestion.
When Kagaya nodded at this, Shinobu clapped her hands to call for Kakushis to deliver Tanjiro and Nezuko to the Butterfly Estate.
"Oooh! Oohh! Can I come with, Onee-chan? Oto-chan??"
Shinobu and Kagaya couldn't help but smile and nod at the boy as he did a small cheer and went with the Kakushi's that carried Tanjiro.
After a few minutes...Tanjiro came running back, wanting to headbutt Sanemi Shinazugawa for stabbing his precious sister twice.
Muichiro Tokito, The Mist Pillar, flicked a couple of pebbles at Tanjiro that knocked him out.
"You shouldn't interrupt Oyakata-Sama, y'know?"
The Kakushi's sputtered out apologies to Kagaya and Muichiro as the Mist Pillar ordered them to "Get out of my sight", to which they did with no delay.
And as the Kakushi rounded a corner, they heard a voice...
"Eh?! We're going back?! But I just got here!"
Y/N's whining voice was heard, leading to the other Hashiras to laugh at his adorableness.
"My child is growing up..." Kagaya smiled to himself, proud for the boy.
[.....]
"Medicines sure do stink, huh?"
"RIGHT?!?! I KEEP TELLING THE PEOPLE HERE AND THEY WON'T UNDERSTAND! AAAAAHHHHHH!!! THERE'S ONLY EO MUCH GROSSNESS I CAN TAKE!"
Zenitsu Agatsuma whined and complained about the medicines, Y/N just nodded his head, agreeing that medicines, do in fact, stink.
"But they're good for you though! The sooner you can ignore the smell, the sooner you'll be able to avoid it since you'll be getting better!" Y/N gave a thumbs up and an encouraging smile.
"See? Even Y/N san here gets it! Now stop complaining and drink it!!" shouted Aoi Kanzaki to Zenitsu.
This went on for awhile...
[....]
"Onee-Chan!!"
Y/N ran up to hug Shinobu as she patted his head. Dangitfeelsgreattobetallerforonce.
"How are you??"
"Good. How about you?"
"I'm good too!"
"Have you been taking the medicines I gave you?"
"Yep! My eyes aren't in as much pain as it was 2 weeks ago!"
"I hope you learned your lesson, don't overuse your unique ability! Try to rely less on it."
"Will do, Onee-Chan! Jaa, I need to get going!"
"To where?"
"Mitsuri chan's place!"
"Oooh?"
"She promised pastries when I passed the Final Selection! No way I'd miss it! Bye bye!!"
Y/N ran excitedly as Shinobu waved goodbye.
"Ara, Ara~ Sayonara!"
Y/N's eyes glowed in delight as he ran to Mitsuri Kanroji's Estate, where she must be baking the most delicious pastries to have ever existed!
Ahhh, the friendship between these two...
Mitsuri is the first Pillar to ever speak to
Y/N! They grew close with every passing day, and soon found themselves to becoming good friends!
Y/N and Iguro are the first ones to always try Mitsuri's new recipe for dishes! And like Mitsuri, Y/N has a monstrous appetite, where it often leaves Iguro broke whenever he's with the two.
Speaking of Iguro, if Y/N's good friends with Mitsuri, he's bound to meet Iguro soon.
At first, Iguro is a little distant and irritated with the boy, but soon warmed up to him since he's kind to everyone!
The 3 of them would go on small trips in various places and Iguro would sometimes tell them a certain place's history if there's ever a record of it.
Iguro finds Y/N's Sharingan and Breath of Ninjutsu, amazing. He is proud to have called Y/N as his junior, he's even considering on making Y/N his Tsuguko once Y/N ranks up.
And we all know Iguro is in love with Mitsuri Kanroji and he wouldn't want another man for her besides 2 people...himself or Y/N.
He doesn't mind if Y/N becomes the one for Mitsuri instead of him, Iguro knows Y/N will treat her good. Even if it's a little irritating to imagine another boy in the one you love's arms. He'll only accept Y/N though, everyone else can f#@k right off.
Once Y/N has arrived at the Estate of Kanroji, he knocked on the door playfully whilst calling her name.
"Mi~ Tsu~ Ri~ chan!"
It took a few more knocks before Y/N heard rapid footsteps and the door swinging open.
"Y/N chan!!"
Mitsuri scooped Y/N in a hug whilst also telling him how proud she is that he easily passed the Final Selection.
The two entered the Estate and Mitsuri had Y/N sit in the dining room.
"I was just about to finish up here!" Mitsuri spoke from the kitchen as scuffling was heard.
She came back with two trays filled with pastries! Y/N's eyes shone brightly at the sight being beheld upon him.
"There's plenty more where that came from!" said Mitsuri as she pointed back to the kitchen.
"Is Iguro chan gonna come too?"
"He has a mission, unfortunately. He did tell me to tell you congratulations though!"
"That's a shame, but there's always next time!"
"Yup! Now, shall we begin??"
Mitsuri placed the tray filled with pastries on the table, and with a knowing look to
Y/N, He knew it was another round of their competition to see who eats more than the other...
"Yes, we shall.."
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Y/N: "Whooah! There are extra bits?"
Mitsuri: "It seems so! But it's my first time doing this though!"
Y/N: "For the record, I won that round!"
Mitsuri: "I-I'll make sure to win next time!"
Y/N: "It's 49-50 now, Mitsuri chan! Be sure to beat me next time or it's my win!"
Mitsuri: "Mhm!"
Y/N: "Oh! It's time for a Taisho Secret!"
Mitsuri: "Did you know? Y/N chan's eyes glow in the dark while he uses the Sharingan? It's a beady bright red!"
Y/N: "Does it really?"
Mitsuri: "Yeah! I think it's really pretty! But my heart went *Baddum!* *Baddum!* the first time I saw it though! I was sooo nervous!"
Y/N: "E-Ehh...Sorry!"
Mitsuri: "Don't be! That was when I didn't know it was you!"
Y/N: "I'd have loved to talk more, but unfortunately we ran out of time!"
Mitsuri and Y/N: "Bye bye!"
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