Girls of Paper and Fire by Natasha NGan

Kidnapped to serve as a consort for the cruel Demon King, Lei finds forbidden love with a fellow "Paper Girl." Their secret romance transforms her struggle for survival into a dangerous rebellion against the monarchy.

This book contains: alcohol, alternate gender/sexual ideologies, death/grief, deception, demonic content (themes), derogatory terms, dubious constent, explicit sexual activities/nudity, gore, murder, misogyny, profanity (minor), PTSD (themes), dialogue, sexual grooming of minors, sexual innuendos, sexual slavery involving minors, suicidal thoughts, torture, toxic relationships, violence (excessive/graphic) and voyeurism (implied).