Trinity Blood shows a world where current and historical elements are mixed and distorted. The opening theme is
"Dress (Bloody Trinity Mix)" by Buck-Tick and the first ending theme is "Broken Wings" by Tomoko Tane.
The Catholic Church went through a
drastic reform that became quite different than it was before
Armageddon. There is the Church opposed to a state called Empire
resembling the Byzantine Empires, Russian and Ottoman Empires. These
elements of Trinity Blood manage to create a universe that keeps
features and similarities with the current, but also creates a sharp
contrast.