No one pov
The street was busy with many cars racing to it destination. Many teenager hanging out with their friends or lover in some restaurants, arcades and many more places where the youngsters this day goes to. Those who have a job either walk or drive to work in full speed some even the red light.
At a park that's full with people is seen a raven male sitting on one of the many bench there under the street light. Many eyes on him because of how handsome he look and his strong scent that identify him as an alpha,some people who have courage even try to flirt with him but he simply give those horny teenager his infamous glare and that shut them up. He laid his back against the bench and relax himself a bit,waiting for his omega-whom is far more attractive than those horny teenagers- to arrive.
"Muzan-san!"
He heard a sweet voice call. With a small smile plastered on his face he sit up straight and look up, only to see his omega is running toward him with a big smile on his face. The red head male came to a stop when he arrive Infront of the raven and put both of his hands on top of his knees while gasping for air. All of that running really tired him off. The raven let out a chuckle and pull the red head male to sit beside him,tanjirou of course is surprised by the sudden action and accidentally let out a shriek making the raven turn his head to the other side trying to hold in his laugh. His omega is so cute!
The raven compose himself and clear his throat before he turn to his omega beside him only to see his face is red because of embarrassment and currently playing with his fingers with a small pout form on his plump pink lips. The alpha gritted his teeth and quickly turn his head once again. This omega gonna be the death of him...
"M-muzan-san?"
The omega meekly called out to the alpha whom currently battling his inner self from attacking the cute omega right beside him.
"Yes?"
He said with a small smile.
"Ano....I just wanted to apologize for making you wait..."
The omega said while trying to avoid looking into the alpha eyes.
"It's fine I didn't wait for that long"
The raven said with a smile and abruptly stand up. He look behind his back and hold out his hand for the omega to take.
"Let's go started the date shall we?"
He said with a close eyes smile. Tanjioru could feel his face heat up. With his teeth biting his bottom lips the red head male take the hand and the raven pull him up. Guiding him to a black car which belong to the raven and open the door to the passenger seat beside the driver seat for the omega. What a gentleman only for his mate of course.
~timeskip~
They arrive at some amusement park that's as usual full of people.
Tanjirou look at the amusement park with sparkle eyes. It his first time going to an amusement park,he never been to 1 because he would always be busy with his work at the café or homework from school. To say that he was excited is an understandment. The raven look at how tanjirou eye the amusement park with a smirk plastered on his face.
"Well what are we waiting for? Let's go"
The raven said and grab a hold of tanjirou's hand,pulling it to follow him to the ticket counter. Tanjirou look at the hands and can't help himself but smile happily about it.
They ride every ride that the amusement park could offer. Some of the ride they even rode it twice or thrice because of how fun it is. For lunch they go to some stall that sell food and bought it there. They're having so much fun that they didn't notice that the time flew by.
The sun begin to drown,only letting half of it shown and the sky begin to change it colour to a beautiful orange mixing with a little colour of yellow here and there. Meaning that it's already evening. The 2 of them is currently sitting on a chair for couple and look up to the sky with a satisfied smile on their face. Today was fun and they get know each other even more deeper along the way. For example, Tanjirou love to test himself in any ride that look scary. He drag the alpha around to ride the ride he wanted next and the alpha simply let him be, watching how those beautiful red doe eyes would sparkled in anticipation when they arrive at their destination.
Tanjirou close his eyes in content and let out a sigh,relaxing his body at the same time. Today is the best day he ever had and he don't want it to end. Just thinking to be away from the alpha already making him sad. But he know that they need to part at some point and maybe meet again on another day. If the alpha wanted to that is.
Muzan notice the trouble look his omega had and can't himself but chuckled. He ruffle the omega's hair and grab his chin to look up to him.
"Now what's wrong my little tanjirou?"
He asked,hand still on the red head male chin. Tanjirou blush and avoid looking into the raven eyes. He parted his lips to say something but decide not to. Slowly he look up to the raven and send him a small smile.
"It's nothing muzan-san...."
"Are you sure?"
The omega bite his bottom lips and let out a sigh.
"It's just that....I....don't want this day to end. I was having so much fun with you muzan-san and.."
The omega blush.
"I...wish for it to stay like this...just the 2 of us and...you know...ugh I don't know how to explain it!"
The omega said with a small pout,feeling a little bit frustrated on how to explain the feeling he currently has. The raven let out a chuckle and pull the omega to sit on his lap with their faces close. Tanjirou could practically feel the raven breath on his lips. The omega quickly look down and snuggle close to the alpha chest,trying to hide his red face.
"Let me guess..you wanted to be close to me,you wanted me to hold you close..like this"
The raven tighten his hold on the omega waist.
"Is that right?"
The raven asked with one of his eyebrow raise. The omega nodded his head while blushing hard.
"That tanjirou is what we call attraction."
"Attraction?"
With a small smile the raven play with tanjirou unruly red hair and started to explain.
"When a mate close to each other they can't help but wanted more from the other. Wanting to be close no matter what,not wanting to be apart from the other. That is what an attraction is. It's also one of the proof that we're mate even if you still did not come of age yet."
The raven said while resting his head on the omega shoulder,take a whiff of those heavenly smell that his omega produce.
"So does that mean...we're really mate? You're not.....lying?"
The raven send a small smile to the omega and kiss his forehead.
"It's fine if you still didn't believe it yet but just as I said once,you will found out when you're come of age. Now then.."
The raven suddenly stand up with the omega still in his hold-bridal style-and send the omega his infamous smirk.
"Let go for some dinner shall we?"
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.sorry if there's a wrong grammar and I hope you enjoy😊I want to give credit to _AhnJiwonBae_ for giving me this idea! Thank you!

YOU ARE READING
Only Mine
FanfictionWell uhm..I recently got into demon slayer fandom and I love it. My favourite ship is munjirou(muzanxtanjiro) but I can't find that many fanfiction about them sooooooo......here I am making book about them😅 It's gonna be an omegaverse au And mafia...