A while ago, you fell into MT Ebott and into the underground, where you went on your journey through the Ruins, Snowdin, The Dunes and Steamworks, making friends, most notably: Ceroba!

Ceroba appeared good at first, and you always saw her as good, she went through the Steamworks with you, helping you... Until she revealed she was after your SOUL... And tried to kill you... And succeeding... But why did you still think she was good?

She took your soul, leaving it to connect to the closest thing available: Her Kitsune Mask. Making you possess it, Ceroba, filled with regret, took the mask back home

One day, after sitting in your empty void of afterlife, decided to see what was happening, you emerged from the mask... Seeing Ceroba holding it, sobbing..

Ceroba: "Why c-couldn't I keep you safe...? W-why was I so blinded...?!"