How about a wsn au where when your soulmate falls in love with you your hair color starts to change.

One morning Wy wake up to see yellow patches on his hair and his breath hitch, the next day it spreads and spreads. Then a while later his whole hair turned blushy red. He loves it.

Sn kept waking up to see his hair black. Then goes to work. The only good thing about his day was watching the vlogger Wy, now seeing that he had colorful hair his hearth both feel heavy and light.

IDK MAYBE THEY WILL STUMPLE AT SOMEWHERE