Male OC X Kimetsu No Yaiba / Demon Slayer

Cheat!

As I sleep, the pitch-black darkness surrounds me again. Okay. This is it. I really need to ask him... I mean her. "Uhh... Lord Lucky, are you there?"

"I've been waiting for your arrival..."

I turned my head and finally see her. "Could you not sneak and appear behind my back?"

"I didn't sneak. You just happen to be in that position." That tone is an honest one.

"Oh..., by the way, I need to ask for your advice. May I ?"

"Hmm? Sure! You're the only one who dared to talk to me. Continue~"

*sweatdrop* "Uhh... okay. You see, I'm worried that Muzan Kibutsuji, the Demon Lord will hunt me down if he knew I have these 'demonic' abilities even though I'm a human. He will use my current family as bait or something. And I'm born into a family of Flame Pillar. If Shinjuro, Ruka, and Kyojuro know I can't use Breath of Flame, will they think of me as a demon? How should I reveal my powers to Kyojuro?" 

There. I let out all my frustration to this Lord of Darkness. No, she's a cursed girl from another world trying to find a cure to her curse. She's the only one that I can reveal my deepest secret. Other people from the Demon Slayer world wouldn't understand. Heck. I doubt that Muzan even knew about the existence of other worlds.

"Three questions at a time eh?~ Because you're willing to talk to me, I'll give you a bit of advice that will settle those three."

"There is a solution?" Really? I've been thinking so hard day and night and yet she just solve it right after hearing it? This must be her specialty as a solo adventurer. Because she isn't registered, she just has to face her enemies without proper preparations. In the end, she must have gotten used to it. 

"Simple! You just have to cheat!"

...*awkward silence*...

"Cheat? What kind of solution is that?"

"Listen, kid, this is not a game. When you put your life on the line, sometimes you have to use tricks and cheats for your survival. Your enemies won't be fair too. Why should you?" Her words are no prattle at all. She really is an adventurer.

"I... understand." I lower my head in shame, my poker face still unchanging.

"Good. Now listen. That Madara Uchiha can use fire type jutsu, right?"

I just nod and let her explain.

"When you using a sword, it will produce wind. Add that fire breath Jutsus to your technique and BAM! You'll have the Breath of Flame!"

Wow. Creating the Breath of Flame using fire Jutsus and the wind from my blade movements. That's pretty smart. "But what if someone noticed?"

"Do you know that people can do magic tricks even though they aren't mages? It's the same concept. Train your body so that you can move at the speed no normal human eye could keep up. If any demon noticed, just kill them on the spot."

"Ha... you made it sounds so easy when it's not."

"Come on kid, cheer up! How dangerous is this Muzan guy anyway?"

"He can turn humans into demons by giving them his blood. He can destroy his own subordinates or absorb them. He has 5 brains and 7 hearts. He can regenerate right after someone cuts him. The only way they believe to kill him is sunlight. But the problem is, he lives in an infinity fortress."

"Wow... that's one hell of an enemy. What's his fighting style?"

"Wide range attack."

"Hmm... for now it's wiser for you to pretend to have Breath of Flame until you and your twin are strong enough to at least face the Upper Moons. When that technique didn't work against them, increase your speed and use that weretiger claw to assassinate them, like a ninja!"