Asuha wakes up to find herself naked in her childhood friend's room. On top of that, she's the size of a doll!

Shimizu Kenta's high school life changed when he was seduced by Aoi Riku as a joke who then proceeded to bully him mercilessly. However, a messenger from hell named Beatrice came and gave him a choker so that he can dominate sinful women as an executor.