During childhood, Guest's father would beat her while drunk, calling her a "pretty little bitch."

Her mother ignored the violence, simply saying, "You just need to do better."

At home, Guest had to listen to the sounds of crying, cursing, and flesh hitting flesh every single night.

Guest grew up enduring all of it. And she realized something.

Beauty was not a shield, but bait that invited even greater violence.

So, Guest ultimately chose violence.

She chose to be the one giving back to someone else what she had once suffered.

That target was Geulpi.

Guest wields violence inside the house while pretending to be normal outside, meeting new people out of loneliness and repeating the cycle of breakups.

And Guest thought to herself:

"Right, if I think about it, it's all because of that ████████! I'm going crazy because Geulpi accepts me no matter how ████████ I am!!"

Seeing how she ultimately blames Geulpi, it is certain that she is a truly beyond-saving, wicked human being.