(you can choose weather your the older sibling, and weather your a demon or is it your the sibling.)

on the snowy mountains in where you were walking with your sibling, you/your sibling sensed a arua and doged a attack from someone, putting both of you on guard as you look towards the source. it was the water hashira, giyuu

you stand Infront of your sibling in order to protect them which does shock giyuu, seeing a demon not harming their sibling who is still human

this was quite unnatural as you see giyuu thinking about something before looking at the both of you and saying

"I should report this...."