Seven Left - A BFDI Fan-Fiction

~Story Started Before BFB 13~
{WARNING!}
The following story contains Violence, Dark Themes [Abuse, Suicide, Death, etc], Major Character Death, and minor shipping.
------------
Nobody remembers how it happened. One second, Four was telling everyone how to do the next challenge. Another second, we are in an apocalyptic wasteland. My name is Pin. I am one of the 7 people from BFB who apparently survived "The Disaster" that made this wasteland. If only we knew what such disaster this was...