1: Again My Life

Darkness and Light.

I always ask myself why such word exist in this universe and what are the real meaning behind such words.

I ask my previous mother, what is darkness and light was when I was 6 years old, she stared at me softly but I could see a glimps of sadness in her eyes as she replied in a loving tone,

"Darkness is what you see at night time, and light is what you see at day time."

I stared at her admirably as I said obliviously cheerfully, "Mom I like the darkness more than the light."

When I told her that, I expected her to be curious and ask me why, but boy was I wrong. I didn't look at her when I said those words she was silent so I assumed that she want me to continue,

"The stars in the sky night are so beautifull, yet the light no, no it hurts my eye." When I told her the reason, I finally stared at her, she was crying I panicked as I kept thinking maybe I disappointed her.

She didn't say anything as she hugged me tight sobbing as if she was scared of something.

Then I turned 18, I was just about to cross the road when suddenly a truck hit me. I was talking to my mom on my phone when I was crossing the road so I didn't missed this opportunity to tell her my last words.

"I love you, mom." And with that I was hit painfully as I felt myself sinking into the darkness.

I have so many regrets, I was just an 18 years old with big dreams, dreams of wanting my mom to experience the luxury of rich people, having to experience love from an opposite sex and marry her and have kids.

And that is how my first life ended.

I never really believed in reincarnations and stuff, I just assumed that they only exist in novels, anime and manga.

But now, I've change my mind.

I only believe something when I have fully experience it. And reincarnation was one of those things that I didn't believe in the past, but not in the current present.

I reincarnated in my second life as Iguro Obanai's twin brother, whose name is Iguro Oburo when he was 12 years old.

How did I know, Well his memory somehow emerged with me.

I don't know what happened to Obanai's brother or how did I reincarnated, but from now on I'm gonna walk on the path of being a Demon Slayer.

All that happened to Obanai having a scar on his mouth and having his right eye blind, I didn't let it happen. I grew to love Obanai, there was a feeling inside of me telling me to protect him from the Demons lurking.

We escaped the cage we were in, of course in exchange it caused the death of our 50 woman relatives.

The only survivors were me, Obanai and out cousin who keep shouting on how this was our fault and we shouldn't have escape.

I wanted to strangle the brat that was in front of me, her word were nothing but useless crap but they struck to a bitter chord in my heart.

What happened to Obanai in the canon.

I experienced it all causing me to go on the same belief he has.

I was disgusted by myself for being a piece of shit. All I could trust was Kaburamaru the same friend that the original Obanai only has. And Obanai my younger twin brother.

I trained to death. I never knew that I'm a prodigy at swords, with me knowing that I have a talent for swords. Obanai and I created the Serpent Breathing with various forms.

At the age of 13 I became a Hashira, but I politely regected the offer as I wanted to stay a low profile for now.

At the age of 15 I unexpectedly meet Kochou Kanae, how we meet;

I just finished a mission I decided to rest on Oyakata-Sama's mansion, with me being so intelligent in my first life it also has use in this world.

When Oyakata-Sama was having a hard time solving a problem because of a demon that's very cautious and also smart.

The Demon knew that Demon Slayers would immidiately notice something was completely wrong when all female's keep disappearing at night.

So I proposed an idea, that I should go undercover as a woman going to the town and when the Demon comes near me I would slay it.

At first Oyakata-Sama was extremely worried but I assured him that I am very strong maybe even stronger than those Hashira's.

Oyakata-Sama and I became very good friends, seeing him suffering because he couldn't help the children that was suffering from Demons.

I introduced him to shoji; I told him that we slayers will take care all of the Demon and he will be our Leader and strategy.

For the first time in my second life, I witness him cry me thinking maybe I've said to much I apologized for what I have said.

But he just looked at me as he thank me.

Anyways, I was in Oyakata-Sama's mansion resting when I just finished my mission. I saw Nichika smilling as she ran towards me, I didn't let her continue running as I rushed at her fast asking why did she ran at me.

She smiled cheerfully as she replied, "Father is looking for you at the Hashira meeting."

"When I'm done with my business there, call your siblings we'll play together." I said in monotous tone despite with my tone Chinika looked at me cheerfully as she nodded. "Go now you wouldn't want your mother to worry about you. Don't run." She nodded as she walk away.

Now what does Oyakata wants with me. I though to myself.

When I entered the garden where the Hashira meeting is.

Oyakata was in the platform together with Kiriya on his right side, and Kuina in his left side.

I look at where Oyakata was looking, I raised an eyebrow.

I recognize five of them from reading the manga.

Tomioka Giyu,

Uzui Tengen,

Gyoumei or whatever his last name is,

Kochou Kanae,

And also Shinazugawa

I hide behind the side of Oyakata's mansion as I eavesdrop in their conversation.

"..... right bitch?"

Huh, is this the time where Shinazugawa became a Hashira.

I continued listening to their conversation.

Shinazugawa angrily accused Oyakata for not valuing the lives and efforts of the demon slayers who die for their cause.

Time past their conversation ended by Shinazugawa crying over a piece of paper.

Before I could go and come back later when their meeting would end, Oyakata called for my name.

"Oburo, why don't you come here." He said in his usual soft tone.

I asked Kaburamaru if he could go and check the hashira's reaction.

According to what Kaburamaru said the Hashira's were confuse.

I step out revealing myself.

The Hashira's stared at me from head to toe as if they're inspecting me.

Kaburamaru hissed at them for staring at me thinking that they might attack me. I didn't bother stopping him as, I was also uncomfortable from their stares.

My dull heterochromia eyes stared back, but I mainly focus my vision in my left eye before I was reincarnated I could barely see out in my right eye.

Maybe the previous Oburo sacrifice himself for his brother?

Oyakata look at me as he smiled, "Children, I want you to meet my friend and also the Serpent Hashira."

I stared at him they couldn't see my lower face because of the bandage that was wrapped around my mouth.

It was too soon. Obanai in the cannon became a hashira when he was maybe, 18 and I also want to become a hashira together with him at the same time.

Without realizing, I cough uncontrollably.

Another thing that I brought with me in this world was that I keep coughing.

I could see Oyakata getting worried as he look at Kanae, "Kanae please assist Oburo." Kanae just nod as she walk towards me.

Her hands was about to touch my back but I slap it away, it's not like I dislike having physical contact it's that I am too disgusting to even let touch anyone touch me.

"No. need." I said, "Oyakata, I already told you that I have no desire to be a hashira yet." I didn't pay attention to the hashira's but I could see them having different expressions.

Oyakata look at me sadly as he replied, "I'm sorry for my impatience Oburo. but the corps need you."

I didn't reply, he was right the corps need every man power they have to slay demons especially the hashira as they are the pillar of this organization.

"Fine."

With that last word I turned around and never looked back. I promise Nichika that I would play with them

Years later:

There were a lot of changes,

Ever since my first appearance to the Hashira's, Kanae has been sticking to me like a glue.

Months later my crow reported me that there has been a lot of missing womans.

I knew it was Doma, that guy was always a pervert. I never expected to meet Kanae in this mission, and that's what it hit me.

Kanae died at the hands of Doma. I stared at her, I had no intention letting her die for the sake of the organization.

Right now she is still too weak fighting an Upper Moon. I protected her from Doma's Demon Blood Art in exchange for my eyes being slashed it didn't matter to me anyway, but Kanae she was making a big fuss about it,

"Iguro-san, your eyes...!!"

"All because you protected me!"

"Zip it! It doesn't matter! Right eye, already weak! I was more or less blind!" I said, thankfully I tightened my bandages before the fight so it didn't let loose.

"Iguro-san, I'll back you u-!!"

I didn't let her finished her sentence as I already knew what she's to say.

"Quite! Stay there! Control breathing! Don't bother! No need help!"

"I have Kaburamaru with me!!" I knew she is confuse, but Kaburamaru is special.

Days later. Oyakata praised and thank me for slaying the Upper Moon Two and ask if I would retire in front of everyone.

"No."

"Oburo you shoukd retir-..."

Even though it was rude of me to cut him off I told him, "I have Kaburamaru with me. No need retire."

Over the years,

I meet Kanroji when Obanai introduced her to me. I could tell right away that he was heads over heels at the pink haired woman

I thought that since me and Obanai are siblings maybe we have the same feelings for her.

But I was wrong, I feel anything about her except that I only saw her as a younger sister which upset me I wanted to feel what its like to love somebody from an opposite sex.

So I tried several ways to fall in love with her, I ask Kanae to help me which was kinda bad idea, from Kaburamaru said she was angry but mantained her posture and tried to politely refuse me.

But the thing is I could sense a bit of anger in her voice. I wonder what made her upset.

All of the slayers who was destined to die according to the manga, I prevented it all.

Kyojuro who was about to become a donut by Akaza. I protect him.

Tengen who was suppose to lost limbs and eye's. I didn't let it happen.

At the end of the fight with Muzan,

Yuichiro who was supposed to die at the age of 12, I didn't let him die.

Muichiro and Genya who was died at the hands of Michikatsu, I saved them all.

Tanjiro didn't lost a single limb except for his eye's,

Shinobu who was about to stupidly let herself be eaten by the new Upper Moon Two. I prevented it by slapping her.

What would happen to your dear older sister who found out that you stupidly let yourself be eaten to kill this demon to kill him.

"You shrimp shit you have younger sisters to look after!"

"And somebody who's dear to you, what would happen to them!"

"Stand up shrimp shit and help me kill this guy!"

Shinobu stand up and fought along side with me to kill the demon.

Yuichiro, Muchiro, Genya, Tanjiro, Nezuko, Inosuke, Kyojuro and all of the Demon Slayer members had grown into me veiwing me as their big brother.

I don't know why would they view me as their big brother, I did nothing except for being mean, harsh and hurting them.

At the end of the fight with Muzan.

Only Gyomei, Obanai and I died.

It made sense for Gyomei as he'd already past the age of 25.

But for Obanai, I know that he wants to swap his body that was flowing with disgusting blood to another if he'd ever reincarnated, and tell Kanroji that he love her.

As for me well maybe I died for being a piece of shit and for not realizing my own feelings for Kanae.

I couldn't see anything, but I can feel all of them rushing towards me.

Kanae I feel her as she lay my head into her lap.

I could feel their tears.

"Why... are you... huff huff... crying?" I ask confusely.

"You... must huff be huff crying for happiness... but why... are your... cries so sad?" I asked them it would made sense for them to cry for happiness but sadness why.

"Whahahah!! Big Brother Oburo!! Don't die!!" Zenitsu shouted as he keep crying.

"Ino... suke..."

"Snifle. Snifle yeah!"

"Stop... banging your fist..."

It was raining in my face. No, it was tears.

Who's tears is it? Kanae?

Ahh, I should tell her before I die.

"Kanae... huff... huff." I manage to call her name.

"Sniffle... yes..."

"I... huff don't know... how huff... to tell you... huff huff this... but for the... past years... I've only found out now... huff that huff I... huff huff... I always loved you..."

She cried even harder as all I could hear was all of them shouting for a medic.

"You two-eyed bastard sniffle sniffle... don't die!!" Yuichiro said as I felt that Muichiro nodded.

"Hm... Really... huff huff... I might die very soon... it's no use calling for a medic... my liver is crushed... I feel my heart is about to... slow down..."

"You all... lived how your... heart desires..."

"Kanae... I thank you for being... my side... despite... that I'm... always... so rude to you..."

"Really... thank you for ca..ring ...m...e"

"Don't die!!"

I am dead tired.

I'm sorry Obanai, I couldn't save you.

In my second life I discover that the darkness protects the light's innocence.

And the Demon Slayer Corps is the darkness that protects the people who are the light.

The Darkness will do whatever they can to protect their love ones.

And the light will live however their heart desires.

And to let the light live how they want.

The Darkness will protect them from any danger.