Sync by Ellen Hopkins

This book follows twin siblings Storm and Lake, who
are separated within the foster-care system but remain
deeply connected. As they struggle with unstable homes,
relationships, trauma, homelessness, abuse, addiction,
and difficult choices, both search for safety.

This book’s main concerns are; alcohol (use/abuse), child
sexual abuse material (CSAM), controversial cultural,
gender, political, racial, religious, sexual and social
commentary, drugs (use/abuse/dealing and prescription
medication abuse), explicit rape of a minor, inflammatory
religious commentary, molestation, prostitution (minors),
sexual activities/nudity, sexual grooming, sexual
exploitation, suicide and voyeuristic sexual misconduct.