Yume Miru Sanagi

Shut away in her own shell, Ayame Chouno drifts through life. Then, by chance, she lands at a facility run by a counselor—Yumeo Yakumo. She expects nothing. But the men there pry open a door to a world of dark, glittering desire. Love interests include: Yumeo Yakumo: the counselor who whispers promises of liberation, teasing out Ayame's deepest, dirtiest cravings. Mahiru Amon: a man who doesn't whisper. He takes, giving her the raw, unfiltered hunger of the flesh. Aki Kouhara: neither man nor woman, but simultaneously sweet, clinging, and intoxicating. Who will she choose? What kind of end awaits her? ...It's all in Ayame's hands now. [Translated from dlsite]