A story about a female ghost and a zombie, acting cute together and making their way into the apocalypse.
The heroine fell from a building, had an out-of-body experience, and saw her body being bitten by a zombie.
Then she turned into a zombie too.
In order to prevent "herself" from doing mischief and biting others, she must always follow behind and supervise.
So the main route is to manage your body well while falling in love with a male zombie...
By the way, let's get to the top of a zombie or something.