Diver Down - BELLADONNA Classmates becomes sex slave in another world ENG - Adult Sex Game

Overview:
One day after school classroom.
The protagonist suddenly wrapped in light and her classmates Akane, Yayaka, and Yukina
A woman who calls herself an "angel" will fly her to another world.
It was a game-like sword and magical fantasy world.
The purpose of the trip is to complete the "wish" of a village and return to reality.
In a different world where various dangers await, the adventures of the four heroes begin.