The original Gashadokuro
Habitat: Countryside (Zipangu Region)
Disposition: Violent, lustful
Diet: Spirit energy and occasionally meat
These Mamono were created in the current age of the Demon Lord by incredibly powerful witches that were able to use necromancy. After discovering normal skeletons, they wanted to create a more durable and lusty version that could defend the Sabbath. Instead, they created skeletal girls with larger than expected breasts and a violent lust for men.
These girls moved to Zipangu, taking up residence in the countryside. During the day, they stay buried in the ground. At nighttime however, they roam the countryside, making cute "gachi gachi" sounds. They scour the countryside for humans to satisfy their sexual drive.
If they find a women by herself, they will educate her on the joys of being a monster and loving men. They will teach her how to receive men and turn her into a skeleton through the power of sex.If they find a men, they will aggressively attack him and drag him away.
During the time of the Former Demon Lord, they ate humans and were extremely violent in nature. Now, they express this through sex. They have an oral fixation with men, pleasuring them with their mouths, sucking anything they can from a man. Unlike ghouls however, they can handle receiving a man's penis in their vagina. In fact, they cherish this, shaking their hips furiously on top of a man.
Additionally, they have strong friendships with witches, acting as their bodyguards and protectors.