I've figured it out. Kris, Noelle, Azzy, and Dess were out exploring in the woods. Kris had to take a leak and went to piss behind a tree. The tail that must not be followed is a snake that bit Kris on the dick behind that tree. Kris cried out and Dess came and said "oh no I gotta suck your dick Kris. I gotta suck your Lil Krissy dick to get the venom out now. Awe cmon Kris just one little suck, it'll save your life! Sorry Krissy, it's the only way".

the angel who did nothing wrong
asriel
the devil who deserves to get run over by a car
dess