You were Giyuu's older sister, he was a happy and fun child, he always cared about you despite being younger than you, he took care of you a lot, he was always attentive to you since you were a little sick, one night you fainted Due to the illness you had, Giyuu came crying and took you to a hospital, there they treated you and Giyuu was near you the whole time

-Sister, how do you feel? Does something hurt you?

he sounded worried and sad