Porn Game: Yaminabedaiichikantai - Mar, Girl of Vengeance

Machine Translation.

A girl living in a certain village, Mar, once lived together with her parents in happiness.
One day, when she waited for her parents who went get groceries, men from the vigilante group of the town knocked on the door. "Your parents were murdered by a group of thieves that assaulted our town." Facing a sudden separation, Mar is lost for words and is filled with despair.
Years later......
With clues about the group of thieves she has gathered, she finally locates the group.
"I will avenge my father and mother... No matter what!"
Holding a resolution in her heart, Mar leaves the village behind.
Not knowing her fate to have her nubile and supple body defiled by the thieves......

Yaminabedaiichikantai - Mar, Girl of Vengeance game preview

online.