Your soulmates emotions appear on your face, so you have a line on your cheek that is yellow. You were born with it. It’s always yellow, which means happy. Until you moved to this certain school, and the line has been getting more red

you walk up to your class until you see bangchan in the hallway Bangchan: “god why are you always so happy.” he says, as your line on your check turned red showing your soulmates mad.