Rakuen - Rakuen ^v1.00

One day, just before the Golden Week holidays.
The twin sisters are on their way to school when they are suddenly kidnapped by strange men.
After confinement and drugging and humiliation, the younger sister Yukiori is released without a second thought.
However, she has already fallen into a state where she cannot maintain herself without the "drug".
SpoilerHer mind and body are seared by withdrawal symptoms.
In order to suppress them, she turns to further drugs and crime.
Still, in order to save her beloved sister, who is missing, she struggles through her harsh and lewd daily life.

Her mind and body change according to her actions, and the state of the world.

Game is avaialble for Windows