A/N: My first time to write a Kimetsu no Yaiba fanfic. This one shot is just about Inosuke… Being Inosuke.

Disclaimer: I don't own the franchise Kimetsu no Yaiba/Demon Slayer. It belongs to an amazing mangaka, Gotouge Koyoharu.

Getting The Name's Wrong

"MONJIROOOOOUUUU!" Roared a young boy with a boar head as his hot blooded demeanor starts rising up at the butterfly mansion. His friend, an auburned haired boy with hanafuda earrings by the name of Kamado Tanjirou sighed in disbelief.

'Oh man… Inosuke is at it again.'

The boar head points at the boy sharp, like he's ready to give him a beating, "Fight me!"

"This is not the time to spar at this moment Inosuke," The rational boy looked at the box, which had his sister, Kamado Nezuko sleeping, "Besides, I have to make sure Nezuko is okay, alright?"

"Who?"

The confused boy aggravates Tanjirou because he can tell who he is, despite getting his name wrong all the time and even sometimes, forgetting his precious sister, Kamado Nezuko. He decided to subside his quelling anger. He challenged him.

"Inosuke. I have a challenge for you."

"Bring it on! I can do it way better than you!"

"Sure sure," Waving off his screaming at his face, the water breathing boy smirked a bit that pissed the boar head more but only he brushed it off. He confidently replied after a few seconds he paused, "I dare you to get my name right~ If you do, your request of fighting me will be accepted."

"Hah?" Inosuke was in disbelief as he already told him that he already get his name, "That's an easy task. Kamaboko Gonpachirou!"

He had a disappointed smile on his face, shaking his head, "Nope."

Shocked in surprise, this makes Inosuke even more angrier than usual as he wanted to dash in and giving him a flying headbuty to the gut. Even if that's the case, Tanjirou can dodge his attacks easily with his wits over his instincts of an animal.

"Grrrrr…" Trembling with fury, the boar head and he tried again, "You are trying to make me use my head to get your name right, Kentarou!"

"Ugghhhh… That's not even my name." Tanjirou puts his right hand on his face. Inosuke frowned and crossed his arms, hearing someone groaning, turning out to be the yellow haired "egg roll", Agatsuma Zenitsu. The wild boy turned his attention to him.

'Who cares about getting his name right? At least he's here.'

"MONITSU!" He called him out loudly.

"Ughhhh… Who the heck is "Monitsu"? Is that your friend?" The loud boy pretended not to know whom Inosuke is talking about. The hotblooded male pointed the guy and yelled.

"Its you, you dumbass!"

"I don't know anyone by that name!" Zenitsu protested.

"Fight me or you are such a pussy!"

"Language!" The older Kamado whined, not wanting Nezuko to hear his potty mouth come out with foul language.

Tanjirou decided to humor and lighten up the situation after the Mt. Nagatumo incident. He looked at Zenitsu, feeling sorry for him that he'll try and keep up the unpredictable pace of Inosuke as he's patting his shoulder as an indication of sympathy.

"Zenitsu. I'll let you talk with Nezuko if you can handle Inosuke for me."

"Re-Really?!" As usual, he gave Tanjirou his puppy eyes and would do everything to talk/bond with his sister. But of course, handling someone like Inosuke isn't an easy task, "You'll do that, my future brother-in-law?!"

"Don't get ahead of yourself." His smile was laced with venom, causing Zenitsu to look away for a bit before apologizing to the boy softly. He sighed, knowing their animalistic friend can blow anytime, "Keep him at bay and I know he'll go to Nezuko's box just to tell her that he wants to fight because of her state."

"I'll protect my beloved Nezuko-chan at all cost!" He salutes with his short arms. Tanjirou only gave him his signature disgusted look because he gave his sister such title like he's the boyfriend or something.

"Why are you looking at me like that?!"

"Raaaaahhhhhhh!" Inosuke roared and he instantly pounced Zenitsu for an itch of a fight. But the boy quickly got him boy holding his hands to show their test of strength, "Now you're talking to my language, Monitsu!"

"It's Zenitsu you boar head!" He corrected him with a banter, grunting as he's staring at the boy. Tanjirou chuckled nervously and knowing the likes of Inosuke, things would become comically ugly and funny at the same time as he started to walk away from them.

'Maybe I can relax and have a wondeful sightseeing about this Butterfly Mansion.'

At the kitchen, a girl with dark blue hair and twintails that has a blue butterfly hairpins was irritating as she's assigned by the Insect Pillar to take care of them. Kanzaki Aoi grinds her teeth and showing a vein at her forehead because at the early morning, all she can hear is Inosuke and Zenitsu's screams and grunts while preparing food for them to recover, giving them proper rest as well.

'Ugh… I have to deal with that pighead idiot and a whiny guy on top of that… Kamado-sama is much more decent than those two nitwits.'

-Inside the box… Nezuko was whining and wanted to sleep due to their clash against the Spider Demon last time. "Mmmm…Mmm..!" She indicates of her muffles that the two boys are loud.-

A/N: Done. To be honest, despite its dark elements of the manga about angst, tragedy, trauma's and such, the franchise is a fun read along with its light moments and maybe… Who knows if I'll write more about it. So, this is just a one shot about our favorite boar head and yeah. See ya guys!