It's like a fangirl's version of voyeurism but for obsessing with potential couples instead of just one person. Shipping internet personas is already creepy and deranged, doing it on IRL people on top of watching them is another level of degeneracy.I understand she's a placeholder for the readers' feelings on the main couple's progressing relationship ... but still, shipping people in real life, in person, is such a creepy past time. It's like a degraded form of people watching.
It was a jealous attack (ch 6)....
So that's how she got scarred huh
Not the sister thoughEveryone in this manga is pale huh, I almost forgot.