Male OC X Kimetsu No Yaiba / Demon Slayer

Onsen

Yoru's POV

Some days had passed since the last time we met the Water Breathing Trio. I'm in a forest nearby a pond during the daytime. I activate Madara's sensing ability to detect if there's any other person nearby.

"Two people, 3 kilometres... that's should do for now." Sigh... it must be those two. The sensing ability is useful but it doesn't tell me who's there. This world doesn't have a chakra signature so it's kinda hard to tell without Kurama's ill intent sensing ability. Demons usually have more ill intent rather than normal humans because they kill more often.

I unbutton my uniform as I get closer to the pond to look at my reflection. I'm now shirtless, revealing my slightly built muscles. Listen, I may seem strong but I'm still thirteen physically so don't expect me to have muscles and six-pack abs like adult Goku in Dragon Ball Z!

I take off the bandages around my waist and throw them aside. The scratches heals fast and the deep bruise on my stomach was fully recovered! Finally! I've been waiting for this forever!

"ONIICHAN! WHY ARE YOU SHIRTLESS?!! WEAR YOUR UNIFORM BEFORE ANYONE ELSE SEES YOU!!!" Oh crap. That must be Kyojuro. I turn my head and take a glance at them. Well, that was fast.

"I'm just checking my wounds. Look! Everything is healed!" I stretch my arm and yawn. "Seriously, I'm just shirtless. I'm still wearing my pants though. It's not like I'll strip or anything like that." I'm glad that I'm not Gray Fullbuster from Fairy Tail or I might have his stripping habit. I scratch my head where the sunlight illuminates me. It itches.

"Oh! That's great! You've healed! NOW PUT YOUR CLOTHES BACK ON!!!"

"Okay! Okay!" I grab my uniform and button it faster than usual. It reminds me of that one time I was almost late for school. Wait... kind of to think of it... is it just me or Kyojuro is being paranoid? Hmm... let's test it out. "Hey otouto, Obanai-kun,..." I turn around to face them. "... let's go to an onsen."

Silence...

What? Did I say something wrong?

"Kyojuro-Kun, what do you think?" Obanai said in a half-whispering tone.

Kyojuro lifts his head and smile. But that smile is not a happy one. It's an irritated smile. "Sure! But may I ask you one question? Have you been to any onsen before?"

"Uh... no? Why?" In my past life, I use to shower all the time. I didn't go to the onsen because I'm aware of the vibe I gave off will scare people away. Some children once called me a Yokai. I have other nicknames too. Akuma, Shinigami, Maou, Yuurei and so on. *Depressed* I'm just a human with zero criminal records. What have I ever did to deserve such nicknames? It's a good thing that I can slightly control it after my reincarnation.

[Yokai=Phantom, Akuma=Demon, Shinigami=Grim Reaper, Maou=Demon King, Yuurei= Spirit]

"Phew! That's a relief!" Wait, what? "Let's go right now! There're not many people at this hour!" Kyojuro grabs my hand and pulls me ahead. Obanai follows behind us without a word.

...

"Welcome young ones! How could I help you?" The receptionist of the inn smiles and greets us politely. Obanai already hides Kaburamaru under his haori in case they won't allow pets inside. Especially a snake.

I read the services and their prices written on a wooden board beside the counter. "We would like a room for tonight and..."

"A private onsen." Kyojuro interrupts. Obanai and I are eyeing him warily. What the heck is wrong with him?