Hey guys I'm back with a new series featuring Natsu in the Kimetsu no Yaiba world as a demon! He is going to be playing an anti-hero type role mainly working with lady Tamayo as he fights on the side of the demon slayers corps. Natsu is going to be slightly OOC and 400 year old. the only difference in his personality is that he isn't oblivious with woman and has a crush. Ofcourse his demon blood art is going tobe hismagic, but will mainly consist of his cursepower.
Chapter One: The swordsman of the swift blade
"Tsk...why does the sun have to be lethal to demons" A man with slightly long spiky pink hair tied in a bun, and piercing reptilian like golden eyes stated. [A/N: I wanted to give him more of a demonic and samurai appearance to fit the demon slayer setting] He wore a tight and sleek black Kimono that was tied closed with a scaly white scarf. the Kimono had a Japanese styled golden dragon design that began at his right abdomen, went around and up his back, came under his right armpit, went across his chest and ended with its head on his left pectoral. The Dragon's mouth was open revealing its sharp fangs. He wore sleek black hakama pants (the same pants tanjiro wears) with golden trimming. He also wore black socks on his feet. A sheathed blade rested at his right side as he sat on his knees with his legs crossed beneath him (a traditional Japanese sitting position)
"Well Natsu those are just the unfortunate rules we demons have to follow" a beautiful demon woman with pupiless purple eyes stated. She wore an equally beautiful purple kimono with a flower design. "I know, I know...but it's just so unfair Tamayo-sama, don't you miss the sight of the breathtaking sunrise?" The man now known as Natsu asked. "Ofcourse I do...my heart yearns for its beauty, however I prefer the alluring night sky, with a full moon" Lady Tamayo responded as she smiled serenely. "Your smile is just as beautiful as the morning sky" Natsu nonchalantly complimented, Tamayo slightly blushed "why thank you Natsu" she said in an appreciating tone.
"Oi, it's Lady Tamayo to you...and don't you dare hit on her you vermin!" A green boy angrily shouted. "I wasn't hitting on her, just complimenting her...besides why should you care...you'll only ever be her adopted little son Yushiro, and Tamayo~sama is just as respectful" Natsu responded with the same vigorous attitude. "You're not even that much older than me, and again it's Lady Tamayo!" Yushiro shouted back. Natsu laughed "I'm over four-hundred years old kiddo!" He revealed whilst smiling pridefully. "Tsk I always forget about that...I guess that's because you're over four hundred years old, yet you act as if you were a child younger than myself!" Yushiro shot back. "Stop fighting..." Lady Tamayo stated. "See Natsu even the narrator addresses her properly!" He stated breaking the fourth wall...wait what?
"Nope because the proper way is Tamayo~sama!" Natsu jokingly stated to provoke the younger boy...which worked very well. "Why you!" Yushiro shouted as he lunged towards Natsu. "Boys I said stop fighting" Lady Tamayo says, loosing her patience. "Pinky!!" Yushiro insulted "At least my hair doesn't look like the outside part of a water melon!" Natsu shot back. "First of all it's called the rind...and it does not!" (It does...it really does) Yushiro defended and Natsu laughed which further angered the green haired boy. "Melon head...melon head" Natsu repeated whilst laughing more, and further angering Yushiro.
"BOYS!...I said stop fighting" the demoness yelled at first but softened her voice and smiled threateningly as she tilted her head. "S-Sorry!" They both apologized in unison. She cleared her throat "thank you...now get ready for bed boys we have plenty to do tonight!" Tamayo revealed as she stood up. "Okay...good morning I guess...what do I even say?" Natsu said asking a very good question. "I believe good sleep would be the correct term" Tamayo stated. "Oh that actually makes sense, well good sleep Tamayo~sama...and melon head" Natsu stated already bolting to his room. "Shut up glutton!"
-The following night-
"Protect her while I'm gone Yushiro!" Natsu stated as he finished tying his kimono closed. "Ofcourse...don't attract too much attention!" Yushiro replied. Natsu began to put on his socks followed by his gloves. He slipped on his sandals, and put on a cloth black mask that covered the entirety of his head, he then put on a red draconic samurai's face mask and pulled his hood over his head. To complete his concealed appearance which left no inch of his skin or hair exposed. "Ofcourse...I'll try to get back as soon as possible!" Natsu stated as he swiftly exited the estate and made his way through the large city as fast as possible. "tsk...it still surprises how fast he can take off just like that." Yushiro stated.
"Yes even if he has the strength to match an uppermoon his speed never fails to impress me" Lady Tamayo stated. "To think...an uppermoon level demon as a fully fledged member of the demon slayer corps" Yushiro revealed [A/N: he isn't actually one of the uppermoon he's just on the same level] I always try to imagine what the demons he slay think as they're decapitated?" Tamayo asked. "With his speed I'm not even sure if they'd realize what happened until it did" the green haired boy said.
-With Natsu-
Natsu continued to swiftly run through the large city of Tokyo as he got a whiff of something. "The scent of blood...demons" Natsu turned in the direction of the smell and got there within seconds. He sat atop a tree surveying the area. "Ah...target spotted" Natsu stated as he lunged and vanished from the tree only to appear behind the demon which was carrying a young woman. "Eh...what just happ-" the demon couldn't finish his sentence as his head was lobbed off.
Natsu looked at his own reflection on his sword. The blade was mainly a deep red in colour, with the signature squiggle design on the sharp edge of the blade in black trimmed in gold! running across the red steal were flame like designs also trimmed in gold. the Japanese characters "焼却" which mean incinerate engraved into the bottom of the blade with a dragon face above the writing on both sides. The Hilt of his sword was decorated with black, and gold ribbons that were tied at the end with the extra rope left dangling. After admiring his sword he wiped the blade off and sheathed it.
"Where's your home?" The woman shakingly pointed her finger in the direction of her house. Natsu picked them up and swiftly brought them to their home. "Thank you..thank you so much!" The woman spoke graciously as she bowed profusely. "No problem!" Natsu smiled before vanishing within the night again. "One down...many to go" Natsu said to himself as he fled through the city like a spider monkey.
Natsu stopped atop a building as he spotted another demon. Again he slayed the demon without it realizing what happened. Natsu went on to slay four more demons in this manner before he began to slow down to a walking pace. Even though he was a demon Natsu still retained his human taste buds, and as such he does enjoy to snack on human food from time to time. He was currently eating some mochi. All the sudden he threw the mochi in the air, turned around and quickly drew his sword to react to an oncoming attack.
Sparks flew off the blades as the sound of clashing metal echoed through out the forest. "Tsk...I was completely silent and very quick...how were you able to react!" A shorter woman with black hair that turned purple spoke. "Uggh...can I for once just enjoy the night without being attacked every five minutes!" Natsu stated sighing. "Huh...you're a demon, yet you wield a nichirin blade?" The girl says confused. "Tsk...don't you know it's illegal to draw your blade against a fellow member of the corps" Natsu said as he brought out a sign of recognition to show the swords-maiden
"Wait...a masked man draped in all black like a ninja, and a dragon kimono tied closed with a white scaly scarf. Who wields a red nichirin sword!...you must be that mysterious ninja-samurai Salamander the demonic swordsman of the swift blade!" The swords-woman spoke as she sheathed her blade. "Yes, yes I am...and it's good to know that I have fans... Oi that large butterfly headpiece of yours, you must be the insect Hashira Shinobu Kocho!" Natsu proclaimed as he sleeved his sword, and revealed her identity. "You would be correct... care to tell me your actual name salamander-san?" Shinobu asked. "Sorry revealing my name, or my appearance for that matter could put both of us in danger" Natsu answered.
"Oh I see...well, anyways I was alerted about a demon's presence within this immediate area. so when I saw you, I naturally assumed you were that demon, sorry for my mistake." Shinobu said as she bowed. "Oh woah no need to bow...it's fine, and it's an understandable mistake...besides I kinda stole your target so my bad I guess." Natsu stated slightly as he scratched his head. "Oh no you don't need to apologize, it's good that the demon was executed sooner than later" Shinobu says as Natsu nods his head in agreement.
"So are the rumours true!" Shinobu asked as something new piqued her interest. "What rumours." Natsu responded. "You know, the rumours about demons you've slayed never catching a single glimpse of you?" she added to her question. "Oh...yes they are, they don't call me the swordsman of the swift-blade for nothing!" Natsu proclaimed pridefully. "Ooh that is rather impressive" the swords-maiden praised as the two of them began to walk back to Tokyo. "Thanks...well I better be on my way, I've been out for a while...it was nice meeting you Shinobu!" Natsu stated as he waved good bye. "it was nice meeting you too, good night salamander-san!" Shinobu stated as she waved at his retreating form form. Natsu then immediately picked up his speed and vanished.
-Tamayo's house-
"I'm back!" Natsu said as he entered his home. He set down the corpse of an unfortunate human who was dead when he found him. "Welcome back Natsu!" Lady Tamayo greeted. "Where is Yushiro?" Natsu asked as he pulled his hood down, and took off his red face mask, followed by the cloth one. "Oh he's out running errands, he actually just left" Tamayo revealed. "Are you sure that's safe?" The pink haired man said as he ran his fingers through his hair to adjust it "Yeah, he's a demon so he won't be eaten, and he is recognized by the corps as someone who works with me." she stated.
"Oh okay as long as he'll be safe" Natsu says. "Why do you worry?" The demoness asked. "What do you mean, of course I'd be worried about my little son" Natsu revealed defending himself as he took off his kimono revealing the tank top beneath, he hung his kimono up. "You say that like we're married" Tamayo said smiling as she turned to face Natsu. His face instantly went red "I d-didn't mean it like that" he defended. "I know, I'm only teasing you!" She responded with a giggle. 'Her laugh is adorable!' Natsu thought to himself
"Anyways I was wondering where the brat was because I got him a book." Natsu stated as he went to get a book from his bag and put it on the table. "Oh he will definitely be excited to read it!" lady Tamayo said as she grabbed a syringe and walked towards Natsu who was now sitting at the table. "Say.., how long has it been since we met?" Natsu asked as Tamayo began to draw some of his blood. "Oh gosh...I'd have to say roughly 300 years now" Tamayo revealed, placing the vial of his blood down before she grabbed another syringe to get more of his blood. "That's what I thought...I still think about the time you helped me regain my memories...thanks again" Natsu said graciously.
"eh, no need to thank me, you already do so much for me and Yushiro" Lady Tamayo stated as she smiled, and finished taking some of his blood. "Thank-you for the blood Natsu" The demoness thanked him graciously as she smiled again facing him. "You're welcome Tamayo~sama." Natsu stood up, turned to her, and smiled as he moved his left arm in a circular motion to relax it. He then walked back to his bag to grab something. "These are for you!" Natsu smiled as he handed Tamayo a bouquet of cherry blossoms. "This bouquet is very beautiful, thank you Natsu." Lady Tamayo graciously accepted the gift as she smiled brightly. "Not as beautiful as that smile of yours." Natsu complimented.
"You're too kind, Natsu-san" Tamayo said as her cheeks slightly turned pink. "I'm back!" Yushiro shouted as he entered the home. "Welcome back!" The other two said in unison. "I got something for you, Yushiro!" Natsu stated as he grabbed the book and hid it behind his back. "Ooh what is it? Yushiro asked intrigued waking up to the pinkette. 'I kinda want to mess with him...but I won't...yet' Natsu thought. "I got you this book!" Natsu said in an energetic tone as he revealed the book. "Oh wow thanks Natsu!...I haven't read this one yet!" Yushiro said excitedly. "You're welcome melon head!" Natsu responded.
It kinda worked, the green haired boy did get slightly pissed off at the nickname but not as Natsu hoped it would. Yushiro was simply too engrossed in the book for it too really bother him that much.
{-THE END-}
So that was chapter one...what do you guys think about it so far. The main purpose of this chapter was to build and show Natsu's relationship with Tamayo and Yushiro. So it wasn't really action packed. Ive decided to place Natsu on the same level as the 5th uppermoon. Again I had to weaken Natsu, because he'd literally be a god in the demon slayer world if I didn't. So I hope y'all don't mind. Once more...His demon blood art is his curse power, and magic.