Kagerou

When the village is enveloped in a white mist in the darkness of the night, the howling of wolves can be heard, and people fight each other.

One by one.

The villagers become residents of the mist.
When the mist that envelops the village eventually clears, there will be no one left in the village.
No one, not even a single person... will remain.

Petty, a woman living in the village, lost her parents several years ago.
As a homeless child, she was taken in by a wealthy merchant in the village, but she was abused every day there.
As her helpless daily life continues, Petty begins to hate the entire village.

"Hey, do you know the story of the village enveloped in mist?"

One day, a helping hand was extended to Petty.
The woman who extended the hand, Remy, called herself the Apostle of Ogami.

The Apostle of Ogami can use magic to twist the laws of the world with her divine power, however, in return, people's lives must be offered as an offering.

Petty shook the hand and decided to become a follower of Ogami.
In order to release her anger towards the villagers who oppressed her and gain her freedom.

[From DLsite]