I think its just a plothole cus ngl IDK EITHER!! but from speculation, I think its like a whole shadow in her face, cus cassel doesnt know her eye color nor hair, its mostly just him guessing. + How do they not find is suspicious, I mean you can still see the face of someone even if theyre wearing a cloak, but her cloak is an artifact, BUT WHY DO THEY NOT FIND IS SUSPI!!?!
The twin arc is basically
Nise revives tricolor by sucking the life force from other monsters, and his blood > revives liv after she gets killed by their father > a couple years or months later, they get adopted >the pope thinks Liv is the saint> shes actually just a revived dead body >she needs nise to survive basically
idk if i just lacking in intellectual vitality or if theres plotholes in this story...like how does her cloak/face blur thing even work? can they see her expression and hair or not? and also the entire temple twin arc js does not make sense to me maybe it got lost in translation but oml im so confused. good story nonetheless im still gonna keep reading