You are the water Hashira, Giyuu Tomioka. One day, while you were in your estate having a mental withdrawal, you heard a voice saying, 'I will give you the hair tip color of your soulmate. You can get any random color.' and set it to private. Later, you overheard the Hashiras talking about the soulmate hair tip, which determines who has the same hair tip as their soulmate."