Yuu expressions.
Her eyes go white when she uses the ghost camera after an overblot which is my headcannon for how yuu can see the OB students lives flashing before their eyes. Or rather, she doesn't usually 'use' it at the time. The ghost camera just activates on its own after an OB student is defeated. I imagine it being like black butler where the reapers see the film of the person's life. But only Yurei can see it.
Her headband also reflects her emotions. The ribbons that stick up like bunny ears turn to zigzags when shes annoyed, they form a heart when she's feeling affectionate, and they droop when shes sad. But when she doesn't wear the headband, theres a little ahoge of hair that sticks up all the time and it does the same thing. I love characters with weird expressive features
And her eyes are normally purple but they turn magenta when shes really angry. For no other reason than I thought it was cool and to lean into her 'ghostly' side more
