Ashes by Ilsa J. Bick

A teen with a terminal brain tumor, is in
the Michigan wilderness when the "Zap"
kills most adults and turns younger
survivors into predatory, cannibalistic
"Changed." He must navigate a lawless
landscape where both humans and
nature have become lethally hostile.

This book contains; alcohol, animal cruelty
(sadistic)/death, cannibalism, dark content,
extreme gore, extreme body horror, extreme
horror, mass animal suicide, murder, torture
(sadistic), sexual activities (not explicit),
suicide ieation, and violence (extreme).