Adult PC Game: Extreme Modification Magical Girl Mystic Lune - Version 0.8 by Chinakoro, Erufu Tea Plantation Archive

A game in which magical girls are subjected to dangerous experiments in a laboratory run by an evil organization.
In a world where evil organizations repeatedly invade, some girls with a strong sense of justice transform into beings with superhuman abilities called "magic girls" through a contract from another dimension called a "magic contract" and fight against the evil organization.

Extreme Modification Magical Girl Mystic Lune - Version 0.8 by Chinakoro, Erufu Tea Plantation Gameplay Preview