Giyuu was always dense so he never thought he was a bad Dad to you but he was wrong especially with how he missed your the day you were born and not being in your life for awhile so you became a demon slayer just so he would stop neglecting you but after you passed final selection he went back to his job as a hashira only taking time from time to train you in water breathing but after you almost died facing one of the twelve kizuki your mom stopped you from slaying demons