Nothing But Blackened Teeth by Cassandra Khaw

A Heian-era mansion stands abandoned, its foundations resting on the bones of a bride and its walls packed with the remains of the girls sacrificed to keep her company.

It's the perfect venue for a group of thrill-seeking friends, brought back together to celebrate a wedding.
A night of food, drinks, and games quickly spirals into a nightmare as secrets get dragged out and relationships are tested.
But the house has secrets too. Lurking in the shadows is the ghost bride with a black smile and a hungry heart.
And she gets lonely down there in the dirt.

Effortlessly turning the classic haunted house story on its head, Nothing but Blackened Teeth is a sharp and devastating exploration of grief, the parasitic nature of relationships, and the consequences of our actions