Kyojuro Rengoku Ice Heart And Flame Soul

Rika Fuji, a user of Ice Breathing. She joined the Corps to slay demons. But with a cold heart, she had a frozen spirit. Nobody could break through her icy walls. And then she met Kyojuro Rengoku. She resented him and his flames. She wouldn't let him melt her icy heart. Rika would make it through the Corps and become an Ice Hashira. She would surpass this Rengoku. Sometimes life doesn't turn out how you want.

Warning; this gets a bit spicy!

This is mostly based on the events of Demon Slayer, but I have added my twist to it for fun. Thanks for reading.