"I'll love you in every universe" ~Tanmui oneshots~

-Envious-

Angst/Fluff
In this Modern Au oneshot their age up tanjiro is 22 and Muichiro is 20

Tanjiro's Pov
I was laying on the couch scrolling through my phone.My arm was wrapped around my sleeping fiancé Muichiro when the door bell to my apartment rang Muichiro shifted in my arms before waking up "Tanji can you get the door?" My beautiful fiancé asked me."Of course my love" i give a quick kiss to muichiro on the cheek before slowly getting up.

I walk into the kitchen towards the key holder that is by the door and grab my house keys.I carefully unlock the door to see the bright and cheery face of my sister Nezuko and behind her was her boyfriend Zenitsu. "Oh hey Nezu—AHHH" Nezuko tried to give me a hug but she ended up knocking us both to the ground with a loud thud."OMG CONGRATULATIONS ON YOUR ENGAGEMENT" Nezuko yelled as she shook me back forth.

"Come on Nezuko-Chan you're gonna make his brain fall out" Zenitsu said kneeling on and placing his hand on Nezuko's shoulders."Hello to you too Zenitsu how have you two been?" Zenitsu was about to respond when "Tanji what's with all the noise..?" Muichiro said as he came around the corner."Hi my love Nezuko and Zenitsu just came over you can go back to sleep if you want" I said looking and my fiancé

I can't help but blush at the sight he was wearing one of my shirts and some shorts with his hair tied in a messy bun.Zenitsu helped nezuko off of me and they looked at each other before going "Ooooo"."Oh Come on you two,I'm allowed to stare at the amazing beauty that is my Fiancé!" I look over to see a beet red Muichiro "Dang Tanjiro your whipped for this man" Nezuko teased with her Hands on her hips"oh quiet!" There was awkward silence before Nezuko and I started busting out laughing.

An hour later

We were all sitting on the couch talking about random things that were happening in our lives.Then I smelt a scent of sadness it came from Muichiro.He was smiling but it wasn't a happy smile it was a sad and pitiful smile. "Mui-Chan are you alright?" I asked a little bit worried "oh yeah I'm fine..I'll be right back" and with that he walked out of the room I could tell he was lying and it made me sad that he wasn't telling me things.Maybe I should follow him..?

Muichiro's pov

I hate that I lied to tanjiro it's a silly reason why I'm upset anyway it's just I can't help being envious of Tanjiro and Nezuko's sibling bond...Even back in Highschool I envied them.Yuichiro never treated me with such Kindness only hatred.I haven't even told him about my engagement every time I tried to call him and tell him he ignored me or yelled at me it makes me want to cry.I keep telling myself maybe he'll be nicer this time but he never is nice.The only one I've told this to is my childhood best friend Kanao she always comforts me and is like the sister I never had...

I entered me and Tanjiro's shared bedroom shutting the door behind me.I scroll through my contacts until I found the one I was looking for..Yuichiro Tokito.
'Maybe he'll be in a better mood this time..' my hopes were soon crushed as he in fact was in a worse mood and yell at me for a while. "WHY IN YOUR RIGHT MIND DO YOU KEEP CALLING ME! I WANT NOTHING TO DO WITH YOU!"
His words always hurt me and make me cry."I-I'm sorr-y I'll st-stop Calling y-you" my words were broken up by my tears and hiccups.With that he hung up on me 'i just wanted him to be nice to me..' I just sat on the ground and cried my eyes out

Kanao'pov

I was shopping at the grocery store for some baking supplies to make butterfly sugar cookies.When all of the sudden my Bestie senses started tingling... Pookie Muichiro is upset who ever made them upset I'll kick their sorry ass! I dashed to the self checkout to checkout as quickly as possible and quickly put all the groceries in my car and started driving to Muichiros house as quickly as possible.

Once I got to their house I didn't bother knocking I just kicked the door in. 'BESTIE IM COMING!' I ran past the living room where Tanjiro and for some reason Zenitsu and Nezuko were here? "KANAO?!" The three all yelled in unison "I'LL PAY FOR THE DOOR LATER!" I yelled back as I continued running all the way to Muichiro and Tanjiro's room was.

I calmly knocked on the door "Mui? Can you let me in?" The door slowly opened I could see muichiro's red puffy eyes "oh honey..." I pulled him into a hug letting him cry on my shoulder " H-He ye-yelled at m-me aga-again". "Shush it's okay"

Tanjiro's pov

After Muichiro walked off I couldn't help but be worried.I excused my self from the conversation and started walking to me and Muichiro's room.He had shut the door  so I couldn't see what was going on so I put my ear against the door to see what I could hear.It sounded like he was on the phone but the person on the other side of the phone was yelling loud enough for me to hear.

"WHY IN YOUR RIGHT MIND DO YOU KEEP CALLING ME!I WANT NOTHING TO DO WITH YOU!" I couldn't tell who it was but hearing them yell at Muichiro made my blood boil."I-I'm sorr-y I'll st-stop Calling y-you" it sounded like Muichiro was crying it's one thing to yell at Muichiro but making him cry crosses the line.I decided that I needed to go back to the living room before I do something dumb. I was barely back in the living room for five minutes before I heard a crash at the door everyone was shocked Zenitsu even scream a little.

I quickly got up to see what the hell just happened when suddenly Kanao ran by 
"KANAO?!" We and the other two yelled "I'LL PAY FOR THE DOOR LATER!" She yelled back before running to my room. I followed after her by the time I got there Kanao wrapped Muichiro in a hug to comfort him.I slowly walked towards the two "love?" I spoke calmly to muichiro.Muichiro slowly looked at me his teary eyes broke my heart Kanao slowly passed Muichiro to me.

  The second we made contact Muichiro clung on to me like a koala I begun to slowly stroked his hair as I whispered sweet nothings to him after a while he fell asleep.I opened the door to our bed room placing him on the bed and covering him up in a thick blanket.After that I walking out of the room to talk to Kanao "Kanao do you know why he was upset?" I asked she nodded her head and sigh "Yes... so you see Muichiro had an older twin brother who didn't like him very much at all and often yells at him."Kanao told me

"Muichiro had a brother? He never mentioned having a brother" I said kinda confused. " his brother didn't want him to mention him at all...Muichiro was always envious of you and your sisters relationship, all he wanted was to have a sibling that cared for him.." Kanao explained. 'I never knew I made him feel like that' "make sure he's alright for me I have to go now" Kanao said as she walk out of the house.I walked back to the living room.

"Hey guys we can pick up this conversation next time". " Sure big brother we don't mind good bye!" Nezuko said as she dragged Zenitsu out the door I laughed a bit as I walked back to the bedroom.I got in bed with Muichiro and cuddled him tightly "Don't worry my love I'll make sure you don't feel that way ever again" I whisper softly to him.I kiss his forehead and drift off to sleep

1382 words
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This is the end of the oneshot I hope you enjoyed it!