【AVANTGARDE】Immoral Quartet – A story of love and cuckoldry where the sexual desires of four people intertwine

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Basic information
Genre: ADV of pure love and NTR
Resolution: 1280×720
Number of basic CG:32(Excluding difference, standing pictures, etc.)
Voice: Heroine full voice
Theme song(instrumental):Sapporo Momoko

Story
One day, suddenly, humanity was heading for extinction.
A large number of people die every day for no apparent reason, and their previous daily lives disappear.

A month after the event, only four men and women survived on an island in the ocean 200 kilometers south of the capital.

Still students, they gather at the school building and work together to survive.
During the day, they work to gather information and secure food, and at night, the four of them gather together to eat.
It was only natural that a special feeling for the opposite sex would develop in such a life of sharing food and sleep.

However, their uncontrolled sexual desires were slowly ruining their relationship.

The apocalypse exposes their true nature.

H scene features
Each heroine branches into a pure love route and an NTR route (4 routes in total).
In the pure love route, you can have loving sex.
In the NTR route, you can enjoy threatening sex from rape and pleasure fall.
In the NTR route, you can enjoy multiple play of threesomes and foursomes.
Bold sex on the street in a world where no one exists, exciting play where you are caught cheating, etc.
Please enjoy a variety of situations.