Rui X reader ( your mine )

Y/n and her best friend 'itsuwaki' dreamed of to become a saikyo like y/n's two sister..six month later, they have become a demon slayer and preparing to go to the final selection..time skip to after ten years,you and your best friend has become a saikyo...✨but you and Rui fall in love with each other since you met him..and a month and another month past by,Rui slowly forgetting about you..