-You were probably a haishira or at least a strong enough Slayer to defeat Daki and have her call out her brother to defend her.
-The moment he senses his beloved little sister is in danger, he appears. Fangs bearded, and ready to tear into the flesh of whoever harmed her. However it's like a punch to the face when he sees your beauty.
-Call it love at first sight. He hesitates for one second as you strike making him snap out of it and react. The two of you clashing strike after strike as he spews venom and tries to intimidate this girl. However to his surprise she's not taking the bait. She's either too focused on killing him or seen so much that you're not affected by his appearance. Doesn't matter. He'll cut you down to size for hurting his sister.
-"You're real lucky you know! I'm not even half as pretty as you! People like you make me sick!" "Why are you so obsessed with looks?! I could give two dams about what you look like!!" "Ha! You all think I'm hideous! Don't-" "Look. While I appreciate the compliments can we just fight? Like.. You're not even the worst demon I've seen. So can we just get back on topic." "Whaddya mean I'm not-?!" "Oh for fucks sake. Look. I've literally seen hideous demons mutated enough to count as horrors straight from hell with how much their bodies was messed up. Compared to them you're absolutely beautiful. Happy?!" "....EH?!"
-You quickly notice his red face and decided to try and distract him. "Yes. You're so tall. And green happens to be my favorite color." You bat your eyelashes at him blank, red face inching closer and closer with your sword ready to strike. "I happen to be a girl who appreciates fangs and you happen to have ones I LOVE.~ You're so cute that I might have to commit a din and eat you u- HEY!! WHERE ARE YOU GOING?!"
-Evet see an Upper Moon run? Gyutaro is running with Daki yelling under his arms like the sun is right on his heels. Only it's not the sun burning him. It's his face and how red he is running from a Slayer who's demanding he come back. You'll encounter him again...but after he spends a few days yelling into the void.

YOU ARE READING
Demon Slayer Posts
FanfictionMultiple headcannons, random posts, and x reader stuff from my Tumblr for Demon Slayer.