After a rather unfortunate event, a person is reincarnated into another world as an undesireable. Most of their human memories are incredibly blurred or erased.

The Heroes are out to get them.

The normal people are out to get them.

The animals are out to get them.

Some of it's own kind are out to get them.

But after it's first taste of what this world is like our protagonist isn't content to go peacfully into the good night, they will go out kicking and screaming. And they plan to tke all those that wronged them along.