Reines Du Sabbat is a JRPG developed by doujin circle Kenix who would later develop Corpse Party, this work became quite infamous on the Japanese internet during the late 90's and early 2000's due to its grotesque content to the point of being "quietly" distributed on freeware sites.

The game takes place in the country of Serfina. In a small hut there lived a girl called Puff, together with her older brother, Lux. Since they've lost their parents at an early age, the older brother had to take the parent role and take care of his little sister. However, one day, Lux suddenly fell ill with a fever of an unknown origin, with no doctor able to help and him gradually losing his strength. Puff heard about a medicinal herb called the Snow Herb that can quickly bring down any kind of fever and went to the forest of Pia to find it. In the forest, being absorbed in the beautiful flowers blooming there Puff lost her uncle.

This is where the game begins and Puff's journey will lead her to witness the cruelty of human beings...