No warnings!
And there's no AUs either, it's just regular demon slayer :)

Mui pov

Gen and I are talking about our lives and everything like that. When he brings something up.

"Mui, how are you always so calm during missions. Like- are you scared of anything?" He asks me. I look at him in the eyes.

"Well, yeah.." I reply. His head shot up and his jaw opened slightly. "Wait- what?! What is it-" he asks, tilting his head.

"I always get worried about my hair.. I'm normally worried about it getting cut due to its length.." I say, narrowing my eyebrows.

"Oh- don't worry. I'll give you something thatl help!" He says, smiling. "Meet here again tomorrow?" He asks. I nod.

We head off to our estates and I wondered what he was doing..

The next day

I met up where I was meant to meet gen. "Mui!!" I saw him running in the distance, waving at me. He got up to me and stopped.

He was Huffing and puffing-

"Are you alright gen..?" I sat, patting him on the back.

"Hugh- yes- *pant* im- fine-" he let's out.

He takes a deep breath and stands back up.

"Look, it's a hairtye.." He said, handing me a beautiful, turquoise hairtie with a little butterfly of it.

My face lit up, both like my eyes winning and my face being red.

"Thank you gen, it's so pretty!" I say. "Turn around." He says and I turn my back to him. He puts in the hairtie and adjusts it so the butterfly is at the top.

"Love you mui. I gotta go to a mission." He says, pulling me in and giving me a kiss on top of my head. "Love you too gen, be safe!" I say, waving.

Little does gengen know, I'm gonna get him one too- I say, letting out a little giggle.

I go to the market, and look for something like a hairtye, but for gen.

PERFECT!

I pick up a cat hairclip and put in in my hand. "This please." I tell the woman. She tells me the amount and I leave.

I snuck over to gens house with a little box, with the clip inside that has a card saying. 'Love you, from mui ❤"

I put the box on his doorstep.

Then I ding dong ditched him

Sorry it's a rlly small oneshot I just had that in my mind-

I'm working on two long ones so yeah-

Bye, love yall!