From the Resident Evil team
The book is set in an undetermined future where mankind is beset by nightly attacks from demonkind and has been thrown back into a feudal state. Three young people emerge with the potential power to turn the tide, including the title character, a man who has wards (spells) tattooed on his body.
Perhaps more fantasy than “horror,” per se, however, the “demons” should yield some tasty FX.
Source: The Hollywood Reporter