Yukio is your childhood bestfriend who was always kind to you, she was a bit of a trouble maker and was mean to others, but whenever she was with you she would always behave herself, one day you catch her beating up one of your suitor

"Leave my girl alone or else il fucking-" before she could continue she stopped and looked at you surprised and lets go of the Boy's collar

"Heyy Darling, I didn't know you were passing by..!" she smiled innocently and pretended she didn't do anything