Bad in the Blood by Matteo L. Cerilli

This book follows fey twins Hawthorne Stregoni and
Gristle Senan Maxim Junior after surviving the Summer
Fayre Massacre, as they navigate institutionalization,
romance, political conspiracy, and escalating magical
violence in the city of Puck's Port.

This book’s main concerns are; alternate gender/sexual
ideologies, coercive institutional treatment, controversial
gender, political and social commentary,
graphic/excessive violence/gore and body horror,
inflammatory political and social commentary, mass death
(including animals and children), and
suicide/self-destructive behavior.