Shattered Angels(2007)

Kyoshiro to Towa no Sora

Kuu attends school in the city of learning, Academia. She soon finds herself locked in conflict with the Absolute Angels: a group of beautiful girls who feed on human life force to survive. Wielding god-like strength, they have the power to destroy the world itself. But are they truly demons of destruction or simply innocent girls trapped in a fate they can’t escape?

(Source: Crunchyroll)