I. Bring Back What Once Was Mine

Soulmate AU in which you cannot see a certain colour until your soulmate forms an emotional bond with you. However, this colour disappears from your sight when the bond is cut. The only scenarios in which you would still be able to see the colour you gained is if your very soulmate is wearing the colour or if you reestablish the once broken bond.

Deep down, Kakashi never was able to let Obito go when he died during the mission to destroy Kannabi bridge. Turns out that "Tobi" has an interesting choice when it comes to his mask.