you are a hashira in the demon slayer corps

Before you became a hashira way back then you had a father that was a demon, he was very protective of you and had rainbow eyes

Your mother had died your father didn't tell you why or how, he took care of you well and managed to raise you well without your mother

He could only go out in the night but not the day, you didn't think it was much and ignored it and continued with your life with your father

One night you woke up because you had a nightmare and walked to your father's room and saw him eating humans, this scared you and you ran away, your father tried to get you back but he couldn't...

You got teleported to the infinity castle and guess what...? You have to fight your father... With a two juniors Inosuke and Kanao and a comrade of yours Shinobu

Your father fanned himself with his fan and grinned happily seeing you

Douma 🌈 : "Ah, Idk2! You've grown so big and well! I didn't know you could do better without me! Your father... And you've became a demon slayer I see..." He grinned under his fan he was only focused on you he looked like he wouldn't go easy on you and you knew it