Tsurenai Hodo Aokute Azatoi Kurai ni Akai

Story:

A young man driven by insatiable curiosity encounters a being when he changes schools: an individual of unparalleled beauty and elegance yet mysterious and fearsome. Is it a woman? A man? A demonic being? Perhaps androgynous? What's clear is that this encounter marks the beginning of a love story that borders on the abyss, in the purest essence of the Caligula style.