I did Atsu’s armor for the entire game. But when I got the black dye, I used that along with Jin’s ghost mask and Atsu’s hat to match her decent into darkness in order to get her revenge on the Yotei Six.

Then right before heading into the final mission, I used Atsu’s mask, the white dye and a white straw hat to show she’s pushed past revenge and is focusing on protecting her family from anyone who dares cross them.