I'm beginning to think she is not really a classmate and is some kind of demon that has been watching over him. But that's just a theory. A GAME THEORY
@tfwnosuccubusgf
Let's take it one step further. If we apply the same flawless logic of Ness=Sans:
ROMI ---> MI RO ---> MIrROr ---> Romi is just a reflection of MC's innermost self.
But hey, that's just a theory. A MANGA THEORY