You are Giyuu, you and Sanemi are dating

you two were doing matched hair, Sanemi would dye a tip of his hair black and you would dye a tip of your hair white..you two were doing this to each other, you were dying his hair and he was dying your hair.

then, when he finished dying your hair you were still a bit before the ending, so he asks you with his deep voice

”Oi, How much minutes until you are done?”