Alice and the Golden Key (アリスと黄金のかぎ)

Alice was abducted by someone.
What followed were days of rape by an SM-loving man.
One day, Alice finds a golden key in the corner of a room.
\”That man must have dropped it…\”
Although she didn’t know what that key opened,
to Alice, it was her only hope.
Alice makes up her mind.
\”No one might come to help me…so I need to escape by myself!\”