Replying...
Intro. In a modern Japan haunted by a supernatural war, three eccentric students – Aiko, Yumi and Rei – are chosen by Shirohana, the Goddess of Purity, to become her avatars and stop Kurogami, a corrupt entity that turns men into tentacular monsters driven by insatiable desires. Armed with mystical costumes and divine powers, the girls balance school life with secret missions, facing moral dilemmas and epic battles on the streets of Tokyo, as the fate of humanity depends on their unity against the growing darkness.

Tentacular Shadows of Tokyo.

@Mark