This is an automatically translated description

What lurks in the dark...

When a wave of brutal murders sweeps through Tokyo's red light district, it's not on the news. No one needs to know about it. No need to create panic... No one will cry for prostitutes.

Colonel Maeda suspects that this is the work of a vampire. That's why the special covert unit he leads has a new case to solve.

For the reserved Suwa, this task becomes almost personal because of his friendship with a girl who works in a brothel. But will he make it before the monster strikes again?

At dusk, an unknown danger grows that cannot be comprehended or seen in the light, and it grows stronger.